Introduction to Microeconomics


Economy - An economy is indeed a system that enables people to produce goods and services, distribute them, and ultimately, earn a living. It encompasses the various institutions, organizations, and activities involved in these processes. 

Three vital processes of an economy are production, consumption, and investmentThese processes are essential for an economy to function and meet the needs of its people. 

Economising of resource means using available resources efficiently and effectively to maximize output and minimize waste

Scarcity, in economics, describes a shortage in the supply of a product or service that is inevitably resolved by a higher price


Why study economics? 

Because of scarcity


What is Economics about? 

Take an example, Ram has Rs.1000He is free to spend to spend the money as he like. What will he do? He has many options before him,

(i)                 He can purchase a dress for him.

(ii)               He may go to watch a movie and eat in a restaurant.

(iii)             He can give tuition fees for his children.

What do you notice about this above example? He has many options before him. He is not enough money to fulfil his all wants. This arises due to means are limited and human wants are unlimited. The two main facts for this – 

a. Human beings have unlimited wants, and
b. The means of satisfying these wants are relatively scarce,
Term economics is derived from Greek word Oikonomia meaning household.

Microeconomics and Macroeconomics 
The subject matter of economics has been divided into two parts – microeconomics and macroeconomics. In Microeconomics we study the economic behavior of an individual units like firm. It is basically concerned with the mechanism of allocation of resources. It is show partial equilibrium analysis as it seeks to determine price and output in an industry independent of those in other industries. Following are studied under this branch-
(a) Product pricing (Theory of Demand and Theory of Production & Cost)
(b) Consumer behavior 
(c) Factor pricing (Theory of Distribution)
(d) Economic conditions of a section of the people
(e) Study of firms and location of a industry

The term Macroeconomics derived from Greek word Makros which means large. In macroeconomics we study the economic behavior of the large aggregates such as the overall economic conditions of the economy such as total production, total consumption etc. Following  are come under macroeconomics-
(a) National income and output 
(b) General price level
(c) Balance of trade and payments
(d) External value of money 
(e) Savings and investment; and
(f) Employment and economic growth
Economy and its Central Problems
Economy refers to the nature and level of economic activities in an area, which may be a village, a city, a country as a whole. Economic activities include production, consumption, investment and exchange.

There are three types of the economy which are as follows-

A.      Capitalist Economy – Capitalism is an economic system in which all the means of production are owned and controlled by private individuals for making profits. In brief, private property is the mainstay of capitalism and main motive to earn maximum profits. Price is determined with the free interplay of forces of demand and supply.

There are many features of capitalism:

(i)                 The right of private property

(ii)               Freedom of enterprise

(iii)             Freedom to choice by the consumers

(iv)              Profit maximization

(v)                Competition among firms

(vi)              Inequalities of income

B.      Socialist Economy – The material means of production i.e. factories, capital, mines etc. are owned by the whole community represented by the state is known as socialist economy or centrally planned economy. Its main objective to attain maximum welfare for the whole society.

(i)                 There is collective ownership of all means of production except small farms, workshops and trading firms which may remain in private hands.

(ii)               There is a central authority to set and accomplish socio-economic goals.

(iii)             Freedom from hunger is guaranteed.

(iv)              A relative equality is an important feature.

(v)                Price mechanism exists in a socialist economy.

C.      Mixed Economy – In a mixed economy, the aim is to develop a system which tries to include the best features of both the controlled economy and the market economy while excluding the demerits of both.

        Features of the mixed economy:

(i)                 Private sector

(ii)               Public sector

(iii)             Combined sector

Central problems of an Economy
Resources are scarce, every economy faces the problems of choice. It is the problem related to the allocation of resources to alternative uses, is called the problems of resource allocation. There are four basic problems:
1. What to produce? - As there is the problem of choice, the economy has to decide which goods and services are to be produced. For example, which of the consumer goods such as wheat, rice, cloth are to be produced and which of the capital goods such as machines and tools are to be produced.
2. How to produce? - This problem refers to the selection of techniques to be used for the production of goods and 
services.
 A good can be produced using different techniques of production; 
generally, two techniques are used :
a) Labour Intensive Technique (LIT) : In this technique more Labour 
and less capital are used.
b) Capital Intensive Technique (CIT) : In this technique more 
capital and less Labour are used.
 The selection of technique is made to achieve the objective of raising the standard of living of 
people to employ everyone.
 For example : In India, LIT is preferred due to the abundance of labour; whereas, countries 
like the USA prefer CIT due to the shortage of labour and abundance of capital.
3. For whom to produce? - This problem involves the selection of a category of people who will ultimately consume the
goods i.e., whether to produce goods for poorer and less rich or richer and less poor.
 Goods are produced for those who have the paying capacity and the paying
capacity depends upon the level of income.
 It means this problem is concerned with the distribution of income among
the factors of production.

Production Possibility Frontier
The Collection of possible combination of goods and services that are produced from a given amount of resources and a stock of technological knowledge, is called PPF. 



Explanation of Curve :
 If the economy uses all its resources to produce only guns, then a maximum of 10 units of cotton and no corn can be 
produced. (point A).
 If all resources are used for corn, then a maximum of 4 units of corn and no cottons can be produced. (Produced E). 
 There are various possibilities with different combinations of guns and butter in between.
 When A, B, C, D and E points are joined, we get a curve AE, known as the „Production Possibility Frontier‟.
 AE curve shows the maximum limit of production of cotton and corn.

Properties of PPC
PPC is downward sloping from left to right  because there exists an inverse relationship  between the change in the quantity of one commodity  and the change in the quantity of another commodity.
 In other words, more of one good can be produced only by  taking resources away from the production of another  good.
PPC Slopes  Downwards
 PPC is concave shaped because of increasing MOC 
(Marginal Opportunity Cost) i.e. more and more units of  one commodity are sacrificed to gain an additional unit of  another commodity.

Opportunity Cost 

Opportunity Cost  is the next best alternative foregone in choosing a given alternative. For example : Mr. X is working in a bank at a salary of Rs 40,000 per month and he receives two more job offers :
a) To work as an executive at Rs 30,000 per month.
b) To become a journalist at Rs 35,000 per month.
 The opportunity cost of working in the bank is the cost of the next best alternative foregone i.e., Rs 35,000
MRT is the ratio of the  number of units of a  commodity sacrificed to gain an additional unit 
of another commodity.
MRT = 
∆ 𝐔𝐧𝐢𝐭𝐬 𝐒𝐚𝐜𝐫𝐢𝐟𝐢𝐜𝐞𝐝/∆ 𝐔𝐧𝐢𝐭𝐬 𝐆𝐚𝐢𝐧𝐞𝐝


Attainable Combinations 
 It refers to those combinations at which the
economy can operate.
 There can be two attainable options :
a) Optimum utilization of resources;
b) Inefficient utilization of resources.

Unattainable Combinations
With the given amount of available resources it is
impossible for the economy to produce any
combination more than the given possible
combination.
 An economy can never operate at any point outside
the PPF.





Positive Economics
 Positive Economics deals with what are economic problems and how are they
solved.
 For example : India is an overpopulated country and prices are constantly
rising.
 Positive economics statements should not be confused as statements of truth
as they may be true or false.
 Positive statements describe what was, what is or what will be under the
given state of circumstances. These statements do not pass any value
judgement.

Normative Economics

Normative Economics deals with what ought to be or how the economic
problems should be solved.
 For example : India should not be an overpopulated country and prices
should not rise.
 Normative economics given by Prof. Marshall Deals with how the world ought
to be.
 Normative economics discusses what are desirable things and should be
realized and what are undesirable things and should be avoided. It gives
decisions regarding value judgement

Q. 1. What is likely to be the impact of "Make in India" appeal to the foreign investors by the Prime Minister of India, on the production possibilities frontier of India? Explain.

Ans. "Make in India' appeal signifies invitation to foreign producers to produce in India. This will lead to increase in resources thus raising production potential of the country. As a result PP curve will shift upwards.

Q. 2. What is likely to be the impact of efforts towards reducing unemployment on the production potential of the economy? Explain.

Ans. Reducing unemployment has no effect on the production potential of the country. It is because production potential is determined assuming full employment.

Unemployment indicated that the country is operating below potential. Reducing unemployment simply helps in reaching potential.

Q. 3. What will be the impact of "Education for All campaign" (Sarva Shiksha Abhiyan) on the Production Possibilities Curve of the Indian economy and why?

Ans. Education raises efficiency by making a worker a skilled worker. This will increase production potential shifting the PP curve upwards.

Q. 4. Explain the effects of floods in Jammu and Kashmir on its production possibilities frontier.

Ans. Floods have damaged and reduced resources. Since potential production declines the production possibility frontier shifts to the left.

Q. 5. The Government establishes a large number of Institutes of science and technology. How will it affect the production possibility frontier? Explain.

Ans. By these institutes skill development will improve. This would result in increase in the production potential of the country. So the PP will shift to the right.

Q. 6.Do rich countries also face central problems? Give reasons for your answer.

Ans. Yes, even in rich countries, resources are scarce, having alternative uses and wants are unlimited.

Q. 7.Assuming that no resource is equally efficient in production of all goods, name the curve which shows production potential of the economy. Explain, giving reasons, its properties.

Ans. The curve is called Production Possibilities Frontier (PPF), Discuss the following Two Properties of PPF: (i) PPF is downward sloping; (ii) PPF is Concave Shaped.

Q. 8. Explain the concepts of Opportunity Cost and Marginal Rate of Transformation using a production possibility

schedule based on the assumption that no resource is equally efficient in production of all goods.

Ans. Suppose the only two goods produced are X and Y.








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