Skip to content
We use only essential cookies to keep you signed in and remember your preferences. See our Cookie Policy.
TestStop
MocksPracticeResourcesIndiaBlogPricing
Sign in
Questions › JNU › JNU SIS 2012 › Q1
4 marks, −1Microeconomics › Perfect competition › Price ceilings, floors and subsidiesModerateabout 3 min

JNU SIS 2012 Question 1: Perfect competition

Suppose the demand function for wheat is Qd=10−2pQ_d = 10 - 2pQd​=10−2p and supply function is Qs=3p−5Q_s = 3p - 5Qs​=3p−5. The government is concerned that the market equilibrium price of wheat is too low and would like to implement a price support policy to protect the farmers. By implementing the price support policy, the government sets a support price ps=4p_s = 4ps​=4 and purchases the extra supply at the support price.

The gain in producer surplus at the support price ps=4p_s = 4ps​=4 is

Tap an option to check your answer.

Answer and worked solution

Checking your account…

Plain-text version

Suppose the demand function for wheat is Q_d = 10 - 2p and supply function is Qₛ = 3p - 5. The government is concerned that the market equilibrium price of wheat is too low and would like to implement a price support policy to protect the farmers. By implementing the price support policy, the government sets a support price pₛ = 4 and purchases the extra supply at the support price. The gain in producer surplus at the support price pₛ = 4 is (A) 20 (B) 28 (C) 11/2 (D) 22/3

Also written as: Suppose the demand function for wheat is Q_d = 10 - 2p and supply function is Q_s = 3p - 5. The government is concerned that the market equilibrium price of wheat is too low and would like to implement a price support policy to protect the farmers. By implementing the price support policy, the government sets a support price p_s = 4 and purchases the extra supply at the support price. The gain in producer surplus at the support price p_s = 4 is

Perfect competition has come up 115 times in 7 exams since 2006.

What this question tests

This question is on Price ceilings, floors and subsidies, part of Perfect competition in Microeconomics.

What binding and non-binding price controls and per-unit subsidies do to quantity, shortage and cost.

TestStop has 13 past-paper questions on this subtopic; the nearest in year are below.

  • IIT JAM 2021 · Q52A vaccine has supply q = 14 + 5p and demand q = 329 - 5p. The government sets a maximum price of Rs. 25 and…
  • GATE 2023 · Q57The demand and supply functions for a commodity are given by: D(p) = 10-2p and S(p) = -2+p where D(p) and…
Practise Perfect competitionMore on Price ceilings, floors and subsidies

Similar questions from other papers

  • GATE 2026 · Q61The market for torch is perfectly competitive. The market demand function for torch is given by X^d=min (400-p,0), p≥0, where p is the price of a torch. The market…
  • IIT JAM 2026 · Q32Consider the demand and supply functions: D(p)=400-8p and S(p)=2p, where p is the unit price and the choke price is Rupees 50. Identify which of the following…
  • CUET-PG 2025 · Q35Which of the following does not hold at the equilibrium price and quantity in a perfectly competitive market?
  • GATE 2025 · Q27In the context of a perfectly competitive market, identify the statement that is NOT CORRECT.
  • IIT JAM 2025 · Q5Which one of the following is the shut-down condition for a profit maximizing firm in a perfectly competitive market? (P = Price, AVC = Average Variable Cost, ATC =…

Question from the JNU SIS 2012 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.