Market EquilibriumClass 12 Introductory Microeconomics NCERT Solutions
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Q1Exercises
Explain market equilibrium.
Solution
Market equilibrium is a situation where the plans of all consumers and firms in the market match, and the market clears. This occurs at a specific price, known as the equilibrium price, where the total quantity of a commodity that all firms wish to sell (market supply) is exactly equal to the total quantity that all consumers wish to buy (market demand).
At this point, there is neither excess demand nor excess supply. Graphically, it is the point where the market demand curve and the market supply curve intersect. The price at this intersection is the equilibrium price, and the corresponding quantity is the equilibrium quantity. If the market is not in equilibrium, the price will tend to change until it reaches the equilibrium level.
Q2Exercises
When do we say there is excess demand for a commodity in the market?
Solution
We say there is excess demand for a commodity in the market when, at a given price, the market demand for that commodity exceeds its market supply. This situation typically occurs when the prevailing market price is below the equilibrium price.
At a lower price, consumers are willing to buy more of the commodity, while firms are willing to supply less. This imbalance creates a shortage. Some consumers who are unable to buy the commodity will be willing to pay a higher price, which puts upward pressure on the price, moving it towards the equilibrium level.
Q3Exercises
When do we say there is excess supply for a commodity in the market?
Solution
We say there is excess supply for a commodity in the market when, at a given price, the market supply of that commodity is greater than its market demand. This situation usually happens when the prevailing market price is above the equilibrium price.
At a higher price, firms are willing to supply more of the commodity, but consumers are willing to buy less. This mismatch results in a surplus of the good. Some firms, unable to sell their desired quantity, will lower their prices to attract buyers. This puts downward pressure on the price, causing it to move towards the equilibrium level.
Q4Exercises
What will happen if the price prevailing in the market is
(i)
above the equilibrium price?
(ii)
below the equilibrium price?
Solution
(i)
Above the equilibrium price: If the prevailing price is above the equilibrium price, the quantity supplied will exceed the quantity demanded, leading to a situation of excess supply (or surplus). Firms will be unable to sell all they want to at this high price. To clear their unsold stock, some firms will lower their prices. This will cause a downward pressure on the price until it falls back to the equilibrium level where market demand equals market supply.
(ii)
Below the equilibrium price: If the prevailing price is below the equilibrium price, the quantity demanded will exceed the quantity supplied, resulting in a situation of excess demand (or shortage). Consumers will compete for the limited goods available, and some who are unable to obtain the commodity will be willing to pay more for it. This creates an upward pressure on the price, causing it to rise until it reaches the equilibrium level where the shortage is eliminated.
Q5Exercises
Explain how price is determined in a perfectly competitive market with fixed number of firms.
Solution
In a perfectly competitive market with a fixed number of firms, the price is determined by the interaction of market demand and market supply. This is often referred to as the 'invisible hand' of the market.
- Market Demand Curve: This curve shows the total quantity of a commodity that all consumers are willing to purchase at different prices. It is downward sloping.
- Market Supply Curve: This curve shows the total quantity that all firms are willing to sell at different prices. It is upward sloping.
The equilibrium price is determined at the point where the market demand curve intersects the market supply curve. At this intersection point, the quantity demanded by consumers is exactly equal to the quantity supplied by firms. This price is the only price at which the plans of both buyers and sellers match, and the market clears without any surplus or shortage.
Q6Exercises
Suppose the price at which equilibrium is attained in exercise 5 is above the minimum average cost of the firms constituting the market. Now if we allow for free entry and exit of firms, how will the market price adjust to it?
Solution
If the equilibrium price is above the minimum average cost (AC) of the firms, it means that the existing firms are earning supernormal profits.
When we allow for free entry and exit, this possibility of earning supernormal profits will attract new firms to enter the market. As new firms enter, the market supply of the commodity increases. This causes the market supply curve to shift to the right.
With the demand curve remaining unchanged, the rightward shift in the supply curve will lead to a fall in the market price. New firms will continue to enter, and the price will continue to fall, as long as supernormal profits exist. This process stops only when the price has fallen to a level where it is equal to the minimum average cost. At this point, firms are only earning normal profits, and there is no longer an incentive for new firms to enter. Thus, the market price will adjust downwards to equal the minimum average cost.
Q7Exercises
At what level of price do the firms in a perfectly competitive market supply when free entry and exit is allowed in the market? How is equilibrium quantity determined in such a market?
Solution
When free entry and exit are allowed in a perfectly competitive market, firms will supply at a price that is equal to their minimum average cost (min AC).
This is because if the price were above the minimum AC, firms would earn supernormal profits, attracting new entrants and driving the price down. If the price were below the minimum AC, firms would incur losses, causing some to exit the market, which would drive the price up. Therefore, the only stable, long-run equilibrium price is
p = min AC, where firms earn zero supernormal profit (i.e., normal profit).The equilibrium quantity in such a market is determined by the market demand at this price. Graphically, it is the quantity where the market demand curve intersects the horizontal price line represented by
p = min AC.Q8Exercises
How is the equilibrium number of firms determined in a market where entry and exit is permitted?
Solution
In a market with free entry and exit, the equilibrium number of firms is determined by the total market demand at the long-run equilibrium price (
p = min AC).The process is as follows:
- The equilibrium price is established at the level of the minimum average cost (
p₀ = min AC). - At this price, the total equilibrium quantity (
q₀) is determined by the market demand curve. - Each identical firm in the market produces the quantity (
q₀f) that corresponds to its minimum average cost. - The equilibrium number of firms (
n₀) is then calculated by dividing the total market quantity demanded by the quantity supplied by a single firm.
The formula is:
n₀ = q₀ / q₀fQ9Exercises
How are equilibrium price and quantity affected when income of the consumers
(a)
increase?
(b)
decrease?
Solution
The effect of a change in consumer income on equilibrium price and quantity depends on whether the good is a normal good or an inferior good.
(a) Increase in income:
- For a normal good: An increase in income leads to an increase in demand at each price. The demand curve shifts to the right. This results in a higher equilibrium price and a higher equilibrium quantity.
- For an inferior good: An increase in income leads to a decrease in demand. The demand curve shifts to the left, resulting in a lower equilibrium price and a lower equilibrium quantity.
(b) Decrease in income:
- For a normal good: A decrease in income leads to a decrease in demand. The demand curve shifts to the left. This results in a lower equilibrium price and a lower equilibrium quantity.
- For an inferior good: A decrease in income leads to an increase in demand. The demand curve shifts to the right, resulting in a higher equilibrium price and a higher equilibrium quantity.
Q10Exercises
Using supply and demand curves, show how an increase in the price of shoes affects the price of a pair of socks and the number of pairs of socks bought and sold.
Solution
Shoes and socks are generally considered complementary goods, meaning they are often used together. An increase in the price of shoes will affect the market for socks as follows:
-
Effect on Demand for Socks: When the price of shoes increases, consumers will likely buy fewer pairs of shoes. Since socks are used with shoes, the demand for socks will decrease. This causes the demand curve for socks to shift to the left, from DD₀ to DD₁.
-
Effect on Equilibrium: The supply curve for socks remains unchanged, as the price of shoes does not directly affect the cost of producing socks. The new equilibrium occurs at the intersection of the new demand curve (DD₁) and the original supply curve (SS₀).
-
Result: The leftward shift in the demand curve for socks leads to a decrease in the equilibrium price of socks (from p₀ to p₁) and a decrease in the equilibrium quantity of socks bought and sold (from q₀ to q₁).
Q11Exercises
How will a change in price of coffee affect the equilibrium price of tea? Explain the effect on equilibrium quantity also through a diagram.
Solution
Coffee and tea are substitute goods. If the price of coffee increases, the equilibrium price and quantity of tea will be affected as follows:
-
Effect on Demand for Tea: When the price of coffee rises, some consumers will switch from drinking coffee to drinking tea, as tea is now relatively cheaper. This will increase the demand for tea at every price level.
-
Shift in Demand Curve: The increase in demand for tea will cause the demand curve for tea to shift to the right, from DD₀ to DD₁.
-
New Equilibrium: The supply curve for tea (SS₀) remains unchanged. The new equilibrium will be at point G, where the new demand curve (DD₁) intersects the supply curve (SS₀).
Diagrammatic Explanation:
- Initially, the market for tea is in equilibrium at point E, with price p₀ and quantity q₀.
- An increase in the price of coffee shifts the demand curve for tea rightward to DD₁.
- At the original price p₀, there is now an excess demand for tea.
- This excess demand pushes the price up. The new equilibrium is established at point G.
Conclusion: The equilibrium price of tea will increase (from p₀ to p₁), and the equilibrium quantity of tea will also increase (from q₀ to q₁).
Q12Exercises
How do the equilibrium price and quantity of a commodity change when price of input used in its production changes?
Solution
A change in the price of an input used in the production of a commodity directly affects the cost of production and, therefore, the market supply.
-
Increase in Input Price: If the price of an input increases, the cost of producing the commodity rises. This makes production less profitable at any given price. As a result, firms will supply less of the commodity at each price, causing the market supply curve to shift to the left. With the demand curve remaining unchanged, this leads to a higher equilibrium price and a lower equilibrium quantity.
-
Decrease in Input Price: If the price of an input decreases, the cost of production falls. This makes production more profitable, and firms will supply more at each price. The market supply curve shifts to the right. With the demand curve unchanged, this results in a lower equilibrium price and a higher equilibrium quantity.
Q13Exercises
If the price of a substitute (Y) of good X increases, what impact does it have on the equilibrium price and quantity of good X?
Solution
If good Y is a substitute for good X, an increase in the price of Y will make good X relatively cheaper and more attractive to consumers.
-
Effect on Demand for X: Consumers will substitute away from the now more expensive good Y and towards good X. This will cause an increase in the demand for good X at every price.
-
Shift in Demand Curve: The demand curve for good X will shift to the right.
-
New Equilibrium: Assuming the supply curve for X remains unchanged, the rightward shift in the demand curve will create excess demand at the original price. This will push the price of X upwards.
Conclusion: The impact will be an increase in the equilibrium price of good X and an increase in its equilibrium quantity.
Q14Exercises
Compare the effect of shift in demand curve on the equilibrium when the number of firms in the market is fixed with the situation when entry-exit is permitted.
Solution
The effect of a shift in the demand curve differs significantly between a market with a fixed number of firms and one where free entry and exit are permitted.
-
Fixed Number of Firms:
- When the demand curve shifts to the right, it creates excess demand at the initial price. This pushes both the equilibrium price and equilibrium quantity up.
- A leftward shift in demand creates excess supply, leading to a decrease in both equilibrium price and quantity.
- Conclusion: Both price and quantity change in the same direction as the demand shift.
-
Free Entry and Exit Permitted:
- In the long run, the equilibrium price is fixed at the minimum average cost (
p = min AC). - When the demand curve shifts to the right, it creates temporary excess demand and a tendency for the price to rise. This leads to supernormal profits, which attracts new firms. The entry of new firms increases supply until the price returns to the
min AClevel. The final result is a significant increase in equilibrium quantity, but no change in the equilibrium price. The number of firms increases. - When the demand curve shifts left, the price tends to fall, causing losses and the exit of firms. Supply decreases until the price is restored to the
min AClevel. The result is a decrease in equilibrium quantity, but no change in price. The number of firms decreases.
- In the long run, the equilibrium price is fixed at the minimum average cost (
Comparison: A shift in demand has a larger effect on quantity when entry-exit is permitted compared to when the number of firms is fixed. However, it has no effect on the long-run equilibrium price with free entry, whereas it does change the price when the number of firms is fixed.
Q15Exercises
Explain through a diagram the effect of a rightward shift of both the demand and supply curves on equilibrium price and quantity.
Solution
When both the demand and supply curves shift to the right, it means that at any given price, consumers want to buy more and firms want to sell more.
Effect on Equilibrium Quantity:
Since both demand and supply are increasing, the equilibrium quantity will unambiguously increase. The new equilibrium quantity (
q₁) will be greater than the original quantity (q₀).Effect on Equilibrium Price:
The effect on the equilibrium price is ambiguous and depends on the relative magnitude of the shifts in the demand and supply curves.
- If the rightward shift in demand is greater than the rightward shift in supply: The equilibrium price will increase.
- If the rightward shift in supply is greater than the rightward shift in demand: The equilibrium price will decrease.
- If the rightward shifts in demand and supply are of the same magnitude: The equilibrium price will remain unchanged.
Diagrammatic Explanation (Case 3):
- The initial equilibrium is at point E, where demand curve DD₀ intersects supply curve SS₀ at price p₀ and quantity q₀.
- The demand curve shifts right to DD₁ and the supply curve shifts right to SS₁.
- The diagram shows a specific case where the shifts are such that the new equilibrium point, F, is at the same price level p₀.
- However, the equilibrium quantity has clearly increased from q₀ to q₁.
Q16Exercises
How are the equilibrium price and quantity affected when
(a)
both demand and supply curves shift in the same direction?
(b)
demand and supply curves shift in opposite directions?
Solution
The effects on equilibrium price and quantity depend on the direction and magnitude of the shifts.
(a) Both curves shift in the same direction:
- Both shift rightwards (increase): The equilibrium quantity will definitely increase. The effect on equilibrium price is ambiguous; it may increase, decrease, or remain unchanged depending on the relative size of the shifts.
- Both shift leftwards (decrease): The equilibrium quantity will definitely decrease. The effect on equilibrium price is ambiguous; it may increase, decrease, or remain unchanged.
(b) Curves shift in opposite directions:
- Demand shifts rightward, Supply shifts leftward: The equilibrium price will definitely increase. The effect on equilibrium quantity is ambiguous; it may increase, decrease, or remain unchanged.
- Demand shifts leftward, Supply shifts rightward: The equilibrium price will definitely decrease. The effect on equilibrium quantity is ambiguous; it may increase, decrease, or remain unchanged.
Q17Exercises
In what respect do the supply and demand curves in the labour market differ from those in the goods market?
Solution
The primary difference between the supply and demand curves in the labour market and the goods market lies in the roles of households and firms.
-
Source of Demand and Supply:
- In the goods market, firms are the suppliers, and households are the demanders.
- In the labour market, the roles are reversed. Households are the suppliers of labour (offering hours of work), and firms are the demanders of labour.
-
Shape of the Supply Curve:
- In the goods market, the supply curve is typically upward sloping.
- In the labour market, an individual's labour supply curve can be 'backward-bending'. At low wage rates, an increase in wages encourages individuals to supply more labour (substitution effect dominates). However, at very high wage rates, individuals may choose to work less and enjoy more leisure, as their income goals are met (income effect dominates). Despite this, the market supply curve for labour is generally considered to be upward sloping because higher wages attract more individuals into the labour force.
Q18Exercises
How is the optimal amount of labour determined in a perfectly competitive market?
Solution
In a perfectly competitive market, a profit-maximising firm determines the optimal amount of labour to employ by comparing the additional cost of hiring one more unit of labour with the additional benefit it generates.
- The additional cost of hiring one more unit of labour is the wage rate (
w). - The additional benefit is the Marginal Revenue Product of Labour (
MRPₗ), which is the extra revenue generated by the output of that additional unit of labour. It is calculated as Marginal Revenue (MR) multiplied by the Marginal Product of Labour (MPₗ).
In perfect competition, a firm is a price-taker, so its Marginal Revenue (
MR) is equal to the price (p) of the good. Therefore, MRPₗ becomes the Value of Marginal Product of Labour (VMPₗ), where VMPₗ = p × MPₗ.The firm will continue to hire labour as long as
VMPₗ > w. The optimal amount of labour is reached when the wage rate is exactly equal to the Value of Marginal Product of Labour.Thus, the condition for the optimal amount of labour is:
w = VMPₗ.Q19Exercises
How is the wage rate determined in a perfectly competitive labour market?
Solution
In a perfectly competitive labour market, the equilibrium wage rate is determined by the interaction of the market demand for labour and the market supply of labour.
-
Market Demand for Labour: This is the sum of the labour demanded by all individual firms at various wage rates. It is downward sloping because as the wage rate falls, firms find it profitable to hire more labour (since
w = VMPₗandMPₗis diminishing). -
Market Supply of Labour: This is the sum of the labour supplied by all individual households at various wage rates. It is generally upward sloping because higher wages attract more people to offer their labour.
The equilibrium wage rate is established at the point where the market demand curve for labour intersects the market supply curve for labour. At this wage, the amount of labour that firms wish to hire is exactly equal to the amount of labour that households wish to supply.
Q20Exercises
Can you think of any commodity on which price ceiling is imposed in India? What may be the consequence of price-ceiling?
Solution
Yes, in India, price ceilings are imposed on several essential commodities to make them affordable for the poorer sections of the population. Examples include wheat, rice, sugar, and kerosene, which are often distributed through the Public Distribution System (PDS) via fair price shops.
The consequences of a price ceiling, which is set below the market equilibrium price, can be:
- Excess Demand (Shortage): At the controlled price, the quantity demanded by consumers will be greater than the quantity supplied by producers, leading to a persistent shortage of the commodity.
- Rationing: To manage the shortage, the government often resorts to rationing, where each consumer is allocated a fixed quota of the good. This can be done through ration coupons.
- Long Queues: Consumers may have to stand in long queues at ration shops to purchase the limited available quantity.
- Black Markets: Since not all consumer demand is met, some consumers may be willing to pay a higher price. This can lead to the creation of a black market where the commodity is sold illegally at a price higher than the government-stipulated ceiling.
Q21Exercises
A shift in demand curve has a larger effect on price and smaller effect on quantity when the number of firms is fixed compared to the situation when free entry and exit is permitted. Explain.
Solution
This statement contains a partial inaccuracy based on the provided text, but the underlying comparison is valid. Let us clarify the effects:
-
With a Fixed Number of Firms: When demand shifts, the market moves along a fixed, upward-sloping supply curve. A rightward shift in demand will cause both the equilibrium price and quantity to increase. The steepness of the supply curve determines how much of the adjustment happens through price versus quantity.
-
With Free Entry and Exit: In the long run, the supply in the market is perfectly elastic at the price equal to the minimum average cost (
p = min AC). The long-run supply curve is a horizontal line at this price.
Comparison of Effects:
- Effect on Price: A shift in the demand curve has a significant effect on price when the number of firms is fixed. In contrast, it has no effect on the long-run equilibrium price when free entry and exit are permitted, as the price always returns to the minimum AC.
- Effect on Quantity: A shift in the demand curve has a larger effect on quantity when free entry and exit are permitted. This is because the entire adjustment to the new demand happens through a change in the quantity supplied by new (or exiting) firms, without any price change to dampen the demand. With a fixed number of firms, the rising price chokes off some of the increase in demand, so the quantity adjustment is smaller.
Therefore, the statement is correct that the price effect is larger with fixed firms. However, the quantity effect is actually larger (not smaller) when free entry is permitted.
Q22Exercises
Suppose the demand and supply curve of commodity X in a perfectly competitive market are given by: qᴰ = 700 - p qˢ = 500 + 3p for p ≥ 15 = 0 for 0 ≤ p < 15 Assume that the market consists of identical firms. Identify the reason behind the market supply of commodity X being zero at any price less than Rs 15. What will be the equilibrium price for this commodity? At equilibrium, what quantity of X will be produced?
Solution
Reason for Zero Supply below Rs 15:
The market supply is zero for any price less than Rs 15 because Rs 15 represents the minimum average variable cost (or the shut-down price) for the identical firms in the market. In the short run, a firm will not produce if the price is less than its minimum average variable cost, as it would not even be able to cover its per-unit variable costs. Since all firms are identical, if the price is below Rs 15, no firm will produce, and thus the market supply will be zero.
Equilibrium Price:
To find the equilibrium price, we set market demand equal to market supply:
qᴰ = qˢ
700 - p = 500 + 3p
700 - 500 = 3p + p
200 = 4p
p = 200 / 4
p = 50Since the equilibrium price of Rs 50 is greater than or equal to Rs 15, this is a valid equilibrium.
The equilibrium price for commodity X is Rs 50.
Equilibrium Quantity:
We can find the equilibrium quantity by substituting the equilibrium price (p = 50) into either the demand or supply equation.
Using the demand equation:
q = 700 - p
q = 700 - 50
q = 650Using the supply equation:
q = 500 + 3p
q = 500 + 3(50)
q = 500 + 150
q = 650At equilibrium, 650 units of X will be produced.
Q23Exercises
Considering the same demand curve as in exercise 22, now let us allow for free entry and exit of the firms producing commodity X. Also assume the market consists of identical firms producing commodity X. Let the supply curve of a single firm be explained as qₛf = 8 + 3p for p ≥ 20 = 0 for 0 ≤ p < 20
(a)
What is the significance of p = 20?
(b)
At what price will the market for X be in equilibrium? State the reason for your answer.
(c)
Calculate the equilibrium quantity and number of firms.
Solution
(a) What is the significance of p = 20?
In a market with free entry and exit, firms will only produce in the long run if the price is at least equal to their minimum average cost (min AC). The price
p = 20 is the minimum price at which a firm is willing to supply any output. Therefore, p = 20 represents the minimum average cost of a firm.(b) At what price will the market for X be in equilibrium? State the reason for your answer.
The market for X will be in equilibrium at a price of Rs 20.
Reason: With free entry and exit, the long-run market equilibrium price must be equal to the minimum average cost of the firms. If the price were higher than Rs 20, firms would earn supernormal profits, attracting new firms into the market, which would increase supply and drive the price down to Rs 20. If the price were below Rs 20, firms would incur losses, causing some to exit the market, which would decrease supply and push the price up to Rs 20. Thus, the only stable equilibrium price is Rs 20.
(c) Calculate the equilibrium quantity and number of firms.
-
Equilibrium Quantity: We find the total market quantity by substituting the equilibrium price (
p = 20) into the market demand curve:qᴰ = 700 - pq* = 700 - 20 = 680The equilibrium quantity is 680 units. -
Quantity Supplied by a Single Firm: We find the quantity supplied by each firm at the equilibrium price (
p = 20):qₛf = 8 + 3pqf* = 8 + 3(20) = 8 + 60 = 68Each firm will produce 68 units. -
Equilibrium Number of Firms: The number of firms (
n) is the total market quantity divided by the quantity per firm:n = q* / qf*n = 680 / 68 = 10There will be 10 firms in the market at equilibrium.
Q24Exercises
Suppose the demand and supply curves of salt are given by: qᴰ = 1,000 - p qˢ = 700 + 2p
(a)
Find the equilibrium price and quantity.
(b)
Now suppose that the price of an input used to produce salt has increased so that the new supply curve is
qˢ = 400 + 2p
How does the equilibrium price and quantity change? Does the change conform to your expectation?
(c)
Suppose the government has imposed a tax of Rs 3 per unit of sale of salt. How does it affect the equilibrium price and quantity?
Solution
(a) Find the equilibrium price and quantity.
Set demand equal to supply:
qᴰ = qˢ
1,000 - p = 700 + 2p
300 = 3p
p = 100
Substitute p = 100 into the demand equation:
q = 1,000 - 100 = 900
The equilibrium price is Rs 100 and the equilibrium quantity is 900 units.(b) Change in equilibrium due to increased input price.
The new supply curve is
qˢ = 400 + 2p. Set new supply equal to demand:
1,000 - p = 400 + 2p
600 = 3p
p = 200
Substitute p = 200 into the demand equation:
q = 1,000 - 200 = 800
The new equilibrium price is Rs 200 and the new equilibrium quantity is 800 units.Does the change conform to your expectation?
Yes, the change conforms to expectations. An increase in the price of an input increases the cost of production, which effectively shifts the supply curve to the left. A leftward shift in supply is expected to lead to a higher equilibrium price and a lower equilibrium quantity, which is exactly what happened.
(c) Effect of a tax of Rs 3 per unit.
A tax of Rs 3 per unit means that for any given quantity, the price suppliers must receive is Rs 3 less than the price consumers pay. Let
P_b be the buyer's price and P_s be the seller's price. P_s = P_b - 3.
The supply curve is a function of the price sellers receive: qˢ = 700 + 2P_s.
Substituting P_s, we get the new supply curve in terms of the buyer's price: qˢ = 700 + 2(P_b - 3) = 700 + 2P_b - 6 = 694 + 2P_b.
Now, set demand equal to the new supply (let P_b = p):
1,000 - p = 694 + 2p
306 = 3p
p = 102
This is the new price for buyers. The new quantity is:
q = 1,000 - 102 = 898
The new equilibrium price paid by consumers is Rs 102, and the equilibrium quantity is 898 units. The price received by sellers is 102 - 3 = Rs 99.Q25Exercises
Suppose the market determined rent for apartments is too high for common people to afford. If the government comes forward to help those seeking apartments on rent by imposing control on rent, what impact will it have on the market for apartments?
Solution
If the government imposes control on rent by setting a maximum allowable rent that is below the market-determined equilibrium rent, this policy is known as a price ceiling.
The impact on the market for apartments will be as follows:
- Shortage of Apartments (Excess Demand): At the legally fixed low rent, the quantity of apartments demanded by renters will be greater than the quantity of apartments that landlords are willing to supply. This will create a persistent shortage of rental apartments.
- Negative Impact on Supply and Quality: Landlords will have less financial incentive to offer apartments for rent. Some may convert their properties to other uses (e.g., condominiums) or simply not invest in building new rental units. Furthermore, with lower rental income, landlords may cut back on maintenance and repairs, leading to a decline in the quality of the existing housing stock.
- Inefficient Allocation: Since there are more potential renters than available apartments, a system of allocation other than price must be used. This could lead to long waiting lists, landlords discriminating among potential tenants on non-price grounds, or people having to offer bribes or 'key money' to secure a lease.
- Emergence of a Black Market: A black market may develop where renters, desperate for housing, are willing to pay rents higher than the legal maximum. Landlords may illegally charge these higher rents, defeating the purpose of the rent control.