Demand Analysis: Law of Demand and Elasticity of Demand — Commerce Lecture Notes

1. Syllabus Overview & Exam Focus

In the official teacher recruitment and competitive syllabus, Demand Analysis: Law of Demand and Elasticity of Demand is a core examination unit of Business Economics. Questions test definitions, accounting/management principles, legal provisions, formulas, and real-world commercial applications.

2. Key Concepts & Essential Principles

Key exam concepts and principles for Demand Analysis: Law of Demand and Elasticity of Demand:

Meaning & Law of Demand: Inverse relationship between price of a good and quantity demanded, ceteris paribus (other factors remaining constant): Q_d = f(P). Reasons for Downward Slope & Exceptions: Law of Diminishing Marginal Utility, Substitution Effect, Income Effect, New Consumers, Multiple Uses. Exceptions: Giffen goods, Veblen/conspicuous consumption, emergency shortages, speculative goods. Price Elasticity of Demand (Ed): Responsiveness of quantity demanded to changes in price: Perfectly Inelastic (0), Inelastic (<1), Unitary (1), Elastic (>1), Perfectly Elastic (Infinity). Measurement Methods & Income/Cross Elasticity: Percentage / Proportionate method, Total Outlay / Expenditure method, Point / Geometric method. Income elasticity (positive for normal, negative for inferior) and Cross elasticity (positive for substitutes, negative for complements).

3. Self-Assessment & Study Checklist

Use this interactive checklist to verify your exam preparation status for this topic:

Read theoretical notes & conceptual summary Memorized essential definitions, formulas & accounting entries Solved minimum 20 previous years' questions (PYQ) Attempted timed self-assessment test Marked complete on main syllabus tracker