Board Paper of Class 12-Commerce 2012 Economics (SET 1) - Solutions
(i) All questions in both the sections are compulsory.
(ii) Marks for questions are indicated against each.
(iii) Questions Nos. 1-5 and 17-21 are very short-answer questions carrying 1 mark each. They are required to be answered in one sentence each
(iv) Questions Nos. 6-10 and 22-26 are short-answer questions carrying 3 marks each. Answers to them should normally not exceed 60 words each.
(v) Questions Nos. 11-13 and 27-29 are also short-answer questions carrying 4 marks each. Answers to them should normally not exceed 70 words each.
(vi) Questions Nos. 14-16 and 30-32 are long-answer questions carrying 6 marks each. Answers to them should normally not exceed 100 words each.
(vii) Answers should be brief and to the point and the above word limits should be adhered to as far as possible.
- Question 1
Define Microeconomics?
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- Question 2
Give one reason for shift in demand curve.
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- Question 3
What is the behaviour of Total Variable Cost, as output increases?
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- Question 4
What is the behaviour of Marginal Revenue in a market in which a firm can sell any quantity of the output it produces at a given price?
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- Question 5
What is a price-maker firm?
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- Question 6
Define Production Possibilities Curve. Explain why it is downward sloping from left to right.
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- Question 7
A consumer consumes only two goods X and Y and is in equilibrium. Price of X falls. Explain the reaction of the consumer through the Utility Analysis.
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- Question 8
Draw total Variable Cost, Total Cost, and Total Fixed Cost curves in a single diagram.
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- Question 9
A producer starts a business by investing his own savings and hiring the labour. Identify implicit and explicit costs from this information. Explain.
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- Question 10
Explain the implications of large number of sellers in a perfectly competitive market.
OR
Explain why there are only a few firms in an oligopoly market.
- Question 11
Define an indifference map. Why does indifference curve to the right show more utility? Explain.
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- Question 12
A consumer buys 10 units of a commodity at a price of Rs. 10 per unit. He incurs an expenditure of Rs 200 on buying 20 units. Calculate price elasticity of demand by the percentage method. Comment upon the shape of demand curve based on this information.
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- Question 13
What does the Law of Variable Proportions show? State the behaviour of marginal product according to this law.
OR
Explain how changes in prices of inputs influence the supply of a product.
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- Question 14
Explain the difference between (i) inferior goods and normal goods and (ii) cardinal utility and ordinal utility. Give example in each case.
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- Question 15
Explain the distinction between “change in quantity supplied” and “change in supply”. Use diagram.
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- Question 16
Market for a good is in equilibrium. There is simultaneous “decrease” both in demand and supply but there is no change in market price. Explain with the help of a schedule how it is possible.
OR
Market for a good is in equilibrium. Explain the chain of reactions in the market if the price is (i) higher than equilibrium price and (ii) lower than equilibrium price.
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