Topic: Elastic behaviour, stress-strain, Hooke's law, Young's, bulk and rigidity moduli· Properties of Solids and Liquids

Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is :

1. Zero

2. \(2W/A\)

3. \(W/A\)

4. \(W/2A\)

Doubtly Asked 30 Oct 2026 NEET UG 2023 Practice test neet Save WhatsApp Report

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Answer: 3. \(W/A\)

The wire is in equilibrium under the weight \(W\) at the free end (the wire's own weight is neglected). The tension at every cross-section is therefore \(W\).

Longitudinal stress = force per unit area = \(W/A\), the same at every point.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is :

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