Principal of microeconomics 10 year , important question, Book Pdf B Com Program

Question-1.

(a) Why production possibility curves are concave to the origin? Under what conditions would it be convex and linear?

(b) What do you understand by mixed economy? Explain its main feature with reference to India.

(a) Production Possibility Curves: Concave to the Origin, Convex, and Linear

Concave to the Origin:

Production Possibility Curve (PPC) is typically concave to the origin, indicating increasing opportunity costs. This shape reflects the idea that as a society specializes in the production of one good, the opportunity cost of producing additional units of that good increases. This is because resources are not perfectly adaptable to the production of all goods. As more resources are shifted from one good to another, they are likely to be less well-suited, leading to diminishing returns and increasing opportunity costs.

Conditions for Convex Shape:

A convex PPC would imply constant opportunity costs. This scenario could occur under certain conditions, such as perfect resource substitutability between the production of two goods. If the resources are equally well-suited for the production of both goods, the opportunity cost would remain constant, resulting in a straight-line (linear) PPC.

Conditions for Linear Shape:

A linear PPC would imply constant opportunity costs as well. This could happen in situations where the two goods being considered have no relationship in terms of resource use, and resources are specialized to produce each good. This is a theoretical scenario and may not often reflect real-world economic situations.

(b) Mixed Economy and its Features with Reference to India:

Mixed Economy:

A mixed economy is an economic system that combines elements of both market and planned economies. In a mixed economy, there is a blend of private and public ownership, and both market forces and government intervention play roles in economic decision-making.

Main Features of India's Mixed Economy:

Coexistence of Public and Private Sectors:

In India, both public (government-owned) and private sectors coexist. Certain industries and services are owned and operated by the government, while others are in private hands.

Government Intervention:

The government in India plays a significant role in economic planning, regulation, and control. It intervenes to correct market failures, promote social welfare, and ensure equitable distribution of resources.

Market Forces:

The market forces of supply and demand also operate in India. Private enterprises function based on market dynamics, and prices are determined by market forces in many sectors.

Mixed Ownership and Control:

Many industries and businesses in India have mixed ownership, where both the government and private entities may have a stake. Public-private partnerships are common in various sectors.

Social Welfare Measures:

The government in India implements various social welfare measures to address issues like poverty, unemployment, and inequality. Subsidies, public distribution systems, and other welfare programs are part of the mixed economy framework.

Regulatory Framework:

India has a regulatory framework to ensure fair competition, consumer protection, and the prevention of monopolistic practices. Regulatory bodies oversee sectors such as telecommunications, finance, and utilities.

Question :-Following table shows the supply to a office per month by three firms 'A', 'B' and 'C' constituting the market. Calculate the market supply schedule.

Price (per kg) In Rs.

Quantity Supplied

Firm 'A'

Firm 'B'

Firm 'C'

Question :- 3.

(a) If the price of a commodity falls from Rs. 8 per unit to Rs. 5 per unit, the consumer's demand increase from 10 units to 16 units. What is the price elasticity of demand for the commodity? (b) What are the assumptions of indifference curve analysis? Also explain the concept of marginal rate of substitution.

(a) Price Elasticity of Demand:

Price Elasticity of Demand (PED) is calculated using the following formula:

PED=% change in price% change in quantity demanded​

The formula can be expressed as:

$\text{PED}=\frac{\frac{\text{Change in Quantity Demanded}}{\text{Initial Quantity Demanded}}}{\frac{\text{Change in Price}}{\text{Initial Price}}}$

Given:

• Initial quantity demanded (${�}_1$) = 10 units
• New quantity demanded (${�}_2$) = 16 units
• Initial price (${�}_1$) = Rs. 8 per unit
• New price (${�}_2$) = Rs. 5 per unit

$\text{PED}=\frac{\frac{({�}_2-{�}_1)}{{�}_1}}{\frac{({�}_2-{�}_1)}{{�}_1}}$

$\text{PED}=\frac{\frac{(16-10)}{10}}{\frac{(5-8)}{8}}$

$\text{PED}=\frac{\frac{6}{10}}{\frac{-3}{8}}$

$\text{PED}=\frac{6}{10}\times \frac{-8}{3}$

$\text{PED}=-\frac{48}{30}$

$\text{PED}=-1.6$

Therefore, the price elasticity of demand for the commodity is -1.6. Since it is negative, the demand is elastic (responsive to price changes).

(b) Assumptions of Indifference Curve Analysis and Marginal Rate of Substitution (MRS):

Assumptions of Indifference Curve Analysis:

Ordinal Utility: The consumer can rank different combinations of goods in order of preference.

Transitivity: If a consumer prefers bundle A to B and B to C, then the consumer also prefers A to C.

Completeness: The consumer can compare and rank all possible combinations of goods.

Non-Satiation: More of any good is preferred to less.

Rationality: Consumers aim to maximize satisfaction given their budget constraints.

Concept of Marginal Rate of Substitution (MRS):

MRS represents the rate at which a consumer is willing to give up some amount of one good in exchange for another while maintaining the same level of satisfaction. It is calculated as the ratio of the marginal utility of one good to the marginal utility of the other.

The negative sign indicates the trade-off: as the consumer gives up some units of one good, they expect a higher amount of the other good to maintain the same level of satisfaction. The MRS typically diminishes as the consumer moves along the indifference curve.

MRS=−Marginal Utility of Good BMarginal Utility of Good A​

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