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SSC CGL Exam  >  SSC CGL Notes  >   Tier 2 - Study Material, Online Tests, Previous Year  >  Key Notes - Introduction Microeconomics

Key Notes - Introduction Microeconomics

UNIT 1: INTRODUCTION
Key Concepts
1. Micro Economics
2. Economy
3. Central Problems of an Economy / Basic Economic Problems

  • What to Produce?
  • How to Produce?
  • For whom to Produce?

4. Causes of an Economic Problem
5. Production Possibility Curve
6. Marginal Opportunity Cost-MOC
7. Marginal Rate of Transformation
8. Opportunity Cost
Key Notes - Introduction Microeconomics

 1. Micro Economics: It is a study of behaviour of individual units of an economy such as individual consumer, producer etc.
2. Economy: An economy is a system by which people get their living.
3. Economic Problem: "An economic problem is basically the problem of choice" which arises due to scarcity of resources having alternative uses".
4. Causes of Economic Problem:

  • Scarcity of resources
  • Unlimited wants
  • Limited resources having alternative uses 

5. Basic (Central) Economic Problems
(a) Allocation of resources
  • What to produce?
  • How to produce?
  • For whom to produce
(b) Efficient Utilization of Resources
(c) Growth of resources

6. Production Possibility Curve (PPC): PP curve shows all the possible combination of two goods that can be produced with the help of available resources and technology.
7. Marginal Opportunity Cost: MOC of a particular good along PPC is the amount of other good which is sacrificed for production of additional unit of another good.
8. Marginal Rate of Transformation: MRT is the ratio of units of one good sacrificed to produce one more unit of other good.
Key Notes - Introduction Microeconomics
9. Scarcity of Resources: Scarcity of resources means shortage of resources in relation to their demand.
10. Opportunity Cost: It is the cost of next best alternative foregone.

The document Key Notes - Introduction Microeconomics is a part of the SSC CGL Course SSC CGL Tier 2 - Study Material, Online Tests, Previous Year.
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FAQs on Key Notes - Introduction Microeconomics

1. What is microeconomics and how is it different from macroeconomics?
Ans. Microeconomics studies individual consumers, firms, and markets, while macroeconomics examines entire economies, inflation, and employment. Microeconomics focuses on price determination and resource allocation at the individual level, whereas macroeconomics analyzes aggregate demand, national income, and economic growth patterns. Understanding this distinction helps students grasp how personal economic decisions differ from economy-wide phenomena.
2. Why do we need to study microeconomic principles for SSC CGL exams?
Ans. Microeconomic concepts form the foundation of economics sections in SSC CGL Tier 2, testing understanding of supply-demand dynamics, consumer behaviour, and market structures. The exam frequently features questions on utility, elasticity, and production costs. Mastering introductory microeconomics principles directly improves performance on general awareness and economics-based questions, making it essential preparation material.
3. What exactly is meant by utility in microeconomics and why does it matter?
Ans. Utility represents the satisfaction or benefit a consumer gains from consuming a good or service. It's subjective and varies between individuals-what brings satisfaction to one person may not to another. In microeconomic analysis, understanding utility explains why consumers make specific purchasing decisions and forms the basis for demand curves, consumer choice theory, and pricing strategies in markets.
4. How do concepts like scarcity and opportunity cost relate to everyday economic decisions?
Ans. Scarcity means resources are limited relative to unlimited wants, forcing difficult choices. Opportunity cost represents what you sacrifice when choosing one option over another. For instance, spending money on coaching means forgoing other purchases. These foundational microeconomic principles explain why individuals and firms must make trade-offs, directly affecting consumption patterns, production decisions, and career choices students face daily.
5. What are the main assumptions of microeconomic theory that I should know for exams?
Ans. Core microeconomic assumptions include rational consumer behaviour, perfect market information, free market entry, and profit-maximising firms. Consumers are assumed to make logical decisions based on available information, while firms aim to maximise profits efficiently. These assumptions underpin demand-supply analysis, elasticity calculations, and market equilibrium concepts. However, real markets often deviate from these ideals due to information gaps and behavioural factors affecting actual outcomes.
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