What is the effect of an unaddressed positive externality on the relationship between equilibrium and optimal quantities?

Externality & Internality MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Externality & Internalityeconomics-mcqs › externality-internality
Published
1 Jun 2019
Last updated
28 May 2026

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Explanation

When a positive externality is not internalized, the market equilibrium quantity tends to be lower than the socially optimal quantity. This happens because the benefits to third parties are not reflected in the market price, leading to underproduction relative to the optimal level.

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