JEE · NEET Previous Year Question

If the radius of earth shrinks by 2% while its mass remains same. The acceleration due to gravity on the earth's surface will approximately:

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

  1. Adecrease by 2%
  2. Bdecrease by 4%
  3. Cincrease by 2%
  4. Dincrease by 4%

Correct answer: D

Solution

(d)
M = constant

% change = - 2 (-2)
% change in g = 4%
increase by 4%

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