The depth at which the effective value of acceleration due to gravity is g/4

⇦

⇨

The depth at which the effective value of acceleration due to gravity is g/4 is (R=Radius of earth)

Options

(a) R
(b) 3R/4
(c) R/2
(d) R/4

Correct Answer:

3R/4

Explanation:

The effect of depth of acceleration due to gravity is g’=g(1-d/R)
Given, g’=g/4
g/4=g(1-d/R)
(g/4)/g=(1-d/R)
1/4=1-d/R ⇒d/R=1-1/4 ⇒3/4
d=3R/4

Related Questions:

1. A uranium nucleus ₉₂ U ²³⁸ emits an α-particle and a β-particle in succession.
2. The necessary condition in making of a junction transistor
3. In Young’s double silt experiment, 12 fringes are observed to be formed
4. A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
5. A radiactive substance emits 100 beta particles in the first 2s and 50 beta

Topics: Gravitation (63)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends