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Q60 (CDS-I/2022) Economy › Basic Concepts & National Income › Demand theory basics Answer Verified

Which one of the following does not influence quantity demanded for a good ?

Result
Your answer: —  Â·  Correct: D
Explanation

The quantity demanded of a good is influenced by factors that affect the consumer's willingness and ability to purchase at various price levels. These include the good's own price, which causes a movement along the demand curve, and non-price determinants that shift the entire demand curve, such as the prices of related goods (substitutes and complements) [2]. Specifically, an increase in the price of a substitute increases demand, while an increase in the price of a complement decreases it [2]. In contrast, the prices of inputs into production (such as labor or raw materials) are determinants of supply, not demand [3]. While input prices affect the cost of production and the quantity supplied by firms, they do not directly influence the consumer's demand function or the quantity demanded at a given price point. Therefore, input prices do not influence the quantity demanded.

Sources

  1. [2] Microeconomics (NCERT class XII 2025 ed.) > Chapter 5: Market Equilibrium > 5.2.2 Price Floor > p. 87
  2. [3] Microeconomics (NCERT class XII 2025 ed.) > Chapter 2: Theory of Consumer Behaviour > 2.4.6 Movements along the Demand Curve and Shifts in the Demand Curve > p. 26
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