A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth ?

1. 150 N

2. 200 N

3. 250 N

4. 100 N

Doubtly Asked 30 Oct 2026 NEET UG 2019 Practice test neet Save WhatsApp Report

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Answer: 4. 100 N

Inside the earth at depth \(d\), \(g'=g\left(1-\dfrac dR\right)\). Halfway to the centre means \(d=R/2\), so \(g'=g/2\).

Weight \(=\dfrac{200}{2}=100\) N.

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

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