Board Paper of Class 12-Commerce 2018 Economics (SET 1) - Solutions
General Instructions:
(i) All questions in both sections are compulsory.
(ii) Marks for questions are indicated against each question.
(iii) Question No.1-4 and 13-16 are very short answer questions carrying 1 mark each. They are required to be answered in one sentence each.
(iv) Question No.5-6 and 17-18 are short answer questions carrying 3 marks each. Answers to them should not normally exceed 60 words each.
(v) Question No.7-9 and 19-21 are also short answer questions carrying 4 marks each. Answers to them should not normally exceed 70 words each.
(vi) Question No.10-12 and 22-24 are long answer questions carrying 6 marks each. Answers to them should not normally 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 opportunity cost. VIEW SOLUTION
- Question 2
At what level of production is total cost equal to total fixed cost? VIEW SOLUTION
- Question 3
Which of the following does not cause shift of supply curve of a good?
(Choose the correct alternative)
(a) Price of input
(b) Price of the good
(c) Goods and services tax
(d) Subsidy VIEW SOLUTION
- Question 4
Which of the following measures of price elasticity shows elastic supply?
(Choose the correct alternative)
(a) 0
(b) 0.5
(c) 1.0
(d) 1.5 VIEW SOLUTION
- Question 5
Explain the central problem of "What is produced and in what quantities.".
OR
In what circumstances may the production possibility frontier shift away from the origin? Explain. VIEW SOLUTION
- Question 6
A consumer buys 200 units of a good at a price of Rs 20 per unit. Price elasticity of deamnd is (–) 2. At what price will he be willing to purchase 300 units? Calculate. VIEW SOLUTION
- Question 7
Write a budget line equation of a consumer if the two goods purchased by the consumer, Good X and Good Y are priced at Rs 10 and Rs 5 respectively and the consumer's income is Rs 100.
OR
Define marginal rate of substitution. Explain its behaviour along an indifference curve. VIEW SOLUTION
- Question 8
Explain the conditions of producer's equilibrium under perfect competition. VIEW SOLUTION
- Question 9
Explain the implications of "freedom of entry and exit of firms" under perfect competition. VIEW SOLUTION
- Question 10
A consumer consumes only two goods X and Y. Explain the conditions of consumer's equilibrium using Utility Analysis. VIEW SOLUTION
- Question 11
Draw Average Variable Cost (AVC), Average Total Cost (ATC) and Marginal Cost (MC) curves in a single diagram. State the relation between MC curve and AVC and ATC curves. VIEW SOLUTION
- Question 12
Define price floor. Explain the implications of price floor.
ORMarket of a good is in equilibrium. If the demand for the good 'decreases'. Explain the chain of effects of this change. VIEW SOLUTION
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