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Question

The following is the demand function in the small market :

\(Q = 50 - 5P\)

Where ‘Q’ denotes quantity in physical units and ‘P’ denotes price of the commodity. At price ₹ 5, the point price elasticity of demand would be :

This question was previously asked in
UGC NET 2015 Paper 1 Question Paper (27-Dec-2015)
The correct answer is

Equal to unity

Point price elasticity of demand: \(e_p = -\frac{dQ}{dP} \times \frac{P}{Q}\).

From \(Q = 50 - 5P\), \(\frac{dQ}{dP} = -5\). At \(P = 5\), \(Q = 50 - 25 = 25\).

\(e_p = 5 \times \frac{5}{25} = 1\), i.e. the price is at the midpoint of the linear demand curve, where elasticity is unitary.

Hence, the answer is Equal to unity.

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Similar Questions

  1. Match the items of List - I with those of List - II and indicate the correct code :

    List - IList - II
    (a) Substitute Goods(i) Negative Cross Elasticity
    (b) Complementary Goods(ii) Low Price Elasticity
    (c) Giffen Goods(iii) Positive Cross Elasticity
    (d) High Income Group Consumption Goods(iv) Positive Price Elasticity

    Codes :

    (a) (b) (c) (d)

  2. A rectangular hyperbola shaped demand curve on all its points has :

  3. A rectangular hyperbola shaped demand curve on all its points has

  4. Match the items of the following two lists and suggest the correct code :

    List – IList – II
    a.Zero Income Elasticityi.Substitute goods
    b.Unit Cross Elasticityii.Complementary goods
    c.Positive Cross Elasticityiii.Indifferent goods
    d.Negative Cross Elasticityiv.Independent goods

    Choose the correct option :

    Codes :

    a b c d

  5. In case the elasticity of demand on an average revenue curve is equal to unity, the marginal revenue will be :


Important Questions from The elasticity of demand and its measurement

  1. When the price increase of a commodity is followed by increased total revenue, which one of the following is the price elasticity coefficient?

  2. Which factor is mainly responsible for increase in demand of natural resources?

  3. When the price of a good falls from Rs. 20 per unit to Rs. 15 per unit, its demand rises by 25 percent. Calculate the price elasticity of demand. (by percentage method)

  4. The interest elasticity of demand for money in liquidity trap is:

  5. What is the value of price elasticity of demand for the rectangular hyperbola demand curve ?

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