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Choose the correct option : Demand curve is parallel to ‘Y’-axis –(a) Perfectly inelastic demand(b) Relatively inelastic demand(c) Perfectly elastic demand(d) Unitary elastic demand

Q.1 (D) (i) Choose the correct option : Demand curve is parallel to ‘Y’-axis –

(a) Perfectly inelastic demand
(b) Relatively inelastic demand
(c) Perfectly elastic demand
(d) Unitary elastic demand

A. (1) c, d

B. (2) b, d

C. (3) a, b, c

D. (4) only a

Doubtly Asked Board exam · March 2026 hsc 12th Save WhatsApp Report
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Best answer

Answer: D. (4) only a

Answer: (4) only a

When the demand curve is a vertical straight line parallel to the Y-axis, quantity demanded does not change at all whatever the change in price, so \(E_d = 0\). This is perfectly inelastic demand. A perfectly elastic demand curve is parallel to the X-axis, and relatively inelastic and unitary elastic curves slope downward.

Doubtly AI · 28 Oct 2026 AI-verified · Oct 2026 Report
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