Topics
Microeconomic Theory
Demand
- Introduction to Microeconomics and Macroeconomics
- Microeconomics
- Macroeconomics
- Macroeconomics Vs Microeconomics
- Introduction to Demand
- Meaning of Demand
- Features of Demand
- Types of Demand
- Determinants of Demand
- Demand Function
- Quantity Demanded and Demand
- Law of Demand
- Demand Schedule
- Demand Curve
- Individual Demand Curve to Market Demand Curve
- Slope of the Demand Curve
- Linear Demand Curve
- Reasons for the Downward Slope of the Demand Curve
- Importance of the Law of Demand
- Exceptions to the Law of Demand
- Movement Along the Demand Curve
- Change in Demand – Shift in Demand Curve
- Difference Between Extension and Increase in Demand
- Difference Between Contraction and Decrease in Demand
- Cross Price Effects
- Relationship Between Income and Demand
- Impact of Tastes and Preferences on Demand for a Commodity
- Industry Demand Vs Firm Demand
- Concept of Utility
- Cardinal Utility Analysis / Marginal Utility Analysis
- Types of Marginal Utility
- Total Utility and Marginal Utility
- Forms of Utility
- Features of Utility
- Relationship Between Total Utility and Marginal Utility
- Law of Diminishing Marginal Utility
- Exceptions of the Law of Diminishing Marginal Utility
- Importance of the Law of Diminishing Marginal Utility
- Consumer's Equilibrium through Cardinal Utility Approach
- Law of Equi-Marginal Utility
- Exceptions of the Law of Equi-marginal Utility
- Importance of the Law of Equi-marginal Utility
- Ordinal Utility Analysis/Indifference Curve Analysis
- Indifference Schedule
- Indifference Curve
- Indifference Map
- Marginal Rate of Substitution (MRS)
- Assumptions of Indifference Curve Analysis
- Properties of Indifference Curves
- Price Line or Budget Line
- Consumer's Equilibrium through Indifference Curve Approach
- Comparison of Utility Theory and Indifference Curve Theory
- Consumer's Equilibrium through Indifference Curve Approach
- Relationship Between Marginal Rate of Substitution and Marginal Utility
Theory of Income and Employment
Elasticity of Demand
- Introduction to Elasticity of Demand
- Meaning and Types of Elasticity of Demand
- Price Elasticity of Demand
- Classification of Price Elasticity - Degrees of Price Elasticity of Demand
- Methods of Measuring Price Elasticity of Demand
- Percentage or Proportionate Method
- Total Expenditure Method
- Point Method (Geometric Method)
- Arc Elasticity of Demand
- Revenue Method
- Numerical Problems of Price Elasticity of Demand
- Factors Affecting Price Elasticity of Demand
- Importance of Elasticity of Demand
- Income Elasticity of Demand
- Types of Income Elasticity of Demand
- Importance of Income Elasticity
- Cross Elasticity of Demand
- Туpes of Cross Elasticity of Demand
- Limitations of Cross Elasticity of Demand
- Importance of Cross Elasticity of Demand
Supply
- Concept of Supply
- Individual and Market Supply
- Distinction Between Supply and Stock
- Determinants of Supply
- Supply Function
- Law of Supply
- Supply Schedule
- Supply Curve
- Derivation of Market Supply Curve From Individual Supply Curves
- Explanation of the Law of Supply
- Time Period and Supply
- Exceptions to the Law of Supply
- Movement Along the Supply Curve Or Expansion and Contraction of Supply
- Shift of the Supply Curve or Change in Supply
- Expansion of Supply and Increase in Supply
- Contraction of Supply and Decrease in Supply
- Elasticity of Supply
- Meaning and Types of Elasticity of Demand
- Price Elasticity of Supply
- Categories (Degrees) of Elasticity of Supply
- Measurement of Elasticity of Supply > Percentage Method
- Measurement of Elasticity of Supply > Geometric or Point Method
- Determinants of Elasticity of Supply
- Importance of Elasticity of Supply
Money and Banking
Balance of Payments and Exchange Rate
Market Mechanism
- Introduction to Market Mechanism
- Basic Concepts of Equilibrium and Equilibrium Price
- Equilibrium Price and Quantity in a Competitive Market
- Changes in Equilibrium
- Effects of Changes (Shifts) in Demand on Equilibrium Price and Equilibrium Quantity
- Effects of Changes (Shifts) in Supply on Equilibrium Price and Equilibrium Quantity
- Effects of Simultaneous Changes (Shifts) in Demand and Supply
- Some Special Cases of Equilibrium
- Importance of the Element in the Determination of Price
- Applications of Tools of Demand and Supply Price Control
- Mаximum Price Legislation or Price Ceiling and Rationing
- Minimum Price Legislation or Floor Price
- Important Areas of Applications of Tools of Demand and Supply Curves
- Meaning of Perfect Competition
- Assumptions and Conditions of Perfect Competition
- Pure and Perfect Competition
- Time Element in the Theory of Price Determination
- Determination of Equilibrium Prices
- Normal Price and Law of Returns
- Comparison between Market Price and Normal Price
- Practical Applications of Tools of Demand and Supply Analysis
Public Finance
Concepts of Production
- Concept of Production
- Product
- Factors of Production
- Production Function
- Short-run and Long-run
- Features of Production Function
- Types of Production Functions
- Some Basic Concepts - Total, Average and Marginal Physical Products
- Relationship between Average Product (AP) and Marginal Product (MP)
- Relationship between Total Product (TP) and Marginal Product (MP)
- Returns to a Factor - Laws of Returns to a Variable Factor
- Law of Variable Proportions
- Statement of the Law of Variable Proportions
- Assumptions of the Law of Variable Proportions
- Illustration of the Law of Variable Proportions
- Three Stages of Production
- Explanation of the Law of Variable Proportions
- Stages of Operation and the Decision to Produce
- Conditions Or Causes of Applicability
- Applicability of the Law of Variable Proportions
- Changes in Production
- Returns to a Factor or Law of Returns
- Law of Variable Proportions and Returns to Scale Compared
- Variation of Output in the Long Run - Returns to Scale
- Scale of Production
- Concept of Indivisibility
- Economies of Scale
- Diseconomies of Scale
National Income
Cost and Revenue
- Introduction to Cost of Production
- Money Cost Or Accounting Cost / Explicit Cost
- Economic Cost
- Opportunity Cost
- Real Cost
- Private and Social Cost
- Fixed Cost and Variable Cost
- Different Cost Concepts
- Total Cost Curves
- Average Cost Curves
- Marginal Cost (MC)
- Relationship between Average and Marginal Cost
- Long-Run Cost Curves
- Long-run Average Cost (LAC) Curve
- Long-run Marginal Cost (LMC) Curve
- LAC Curve U-shaped - Economies and Diseconomies of Scale
- Numerical Problems Long-run Cost Curves
- Revenue Concepts
- Behaviour of Revenue Under Different Market Structures
- Relationship Between Total, Average and Marginal Revenues Under Perfect Competition
- Relationship Between Total, Average and Marginal Revenue Under Imperfect Competition
- Significance of Revenue Curve
- Numerical Problems of Revenue
Main Market Forms and Equilibrium of a Firm
- Concept of Market
- Market Structure
- Classification of Market Structure
- Perfect Competition
- Monopoly
- Monopolistic Competition
- Oligopoly
- Duopoly
- Bilateral Monopoly
- Concept of Monopsony
- Other Forms of Market
- Factors Determining Market / Extent of Market
- Demand Curves of Firms under Different Market Forms
- Comparison between different forms of market
CISCE: Class 12
Introduction with Analogy
Imagine you go shopping to buy notebooks and pens with only ₹40. Here, your budget puts a limit on what you can buy, creating your "price line" or budget line.
CISCE: Class 12
Definition: Budget Line
- Price Line/Budget Line shows all the combinations of two goods a consumer can purchase, given their total money income and market prices.
- Ferguson: “The price line shows the combinations of goods that can be purchased if the entire money income is spent.”
- Prof. Hibdon: “The budget line shows all the different combinations of the two commodities that a consumer can purchase, given his money income and the price of the two commodities.”
CISCE: Class 12
Example Table
| Units of Clothing | Units of Food | Expenditure |
|---|---|---|
| 5 | 0 | (5×40)+(0×20)=₹200 |
| 4 | 2 | (4×40)+(2×20)=₹200 |
| 3 | 4 | (3×40)+(4×20)=₹200 |
| 2 | 6 | (2×40)+(6×20)=₹200 |
| 1 | 8 | (1×40)+(8×20)=₹200 |
| 0 | 10 | (0×40)+(10×20)=₹200 |
CISCE: Class 12
Graphical Representation
- Draw a graph with “Food Units” on the X-axis and “Clothing Units” on the Y-axis.
- Plot the combinations from the table and connect with a straight line (budget line).
- The line slopes down because choosing more of one means less of the other, since money is limited.
CISCE: Class 12
Formula: Budget Line
Total Spending = (Food Units × Price of Food) (Clothing Units × Price of Clothing) = Budget
M = Pf × Qf + Pc × Qc
-
In this example: 20 × Qf + 40 × Qc = 200
CISCE: Class 12
Properties of Budget Line
- Negatively sloped: Buying more of one means giving up the other
- Slope: \[\mathrm{Equals~}-\frac{P_f}{P_c}\], i.e., negative inverse of price ratio
- Straight line: Prices are fixed
CISCE: Class 12
Shifts in the Budget Line
- Change in Income: If income rises, the line shifts outward right in parallel, showing more buying power; if income falls, it shifts inward to the left.
- Change in Price: If the price of X falls, the line rotates outward from the X-axis; if the price rises, it rotates inward. The same for Y with the Y-axis as a pivot.
CISCE: Class 12
Consumer’s Equilibrium (Using Indifference Curves)
- Equilibrium condition: Price line is tangent to the highest possible indifference curve (shows maximum satisfaction).
- Tangency condition: At equilibrium,
\[MRS_{xy}=\frac{\text{Price of X}}{\text{Price of Y}}\]
- Convexity condition: Indifference curve must be convex to the origin at the equilibrium point (shows preference for variety).
CISCE: Class 12
Key Point Summary
- The budget line shows maximum affordable combinations
- It has a negative slope and is straight when prices are fixed
- Shifts outward/inward with changes in income or prices
- Equilibrium occurs where budget line is tangent and indifference curve is convex
