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NTA Abhyas JEE Main2020PhysicsGravitationPractice

The value of gravitational acceleration g at a height h above the earth's surface is g 4 then (R = radius of earth)

Options

  1. Ah = R
  2. Bh = R 2
  3. Ch = R 3
  4. Dh = R 4

Correct answer

A. h = R

Step-by-step solution

g ′ = g R R + h 2 When g ′ = g 4 then. g 4 = g × R R + h 2 ⇒ 1 2 = R R + h ∴ 2 R = R + h ⇒ R = h

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