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JEE Main20254 Apr 2025Morning ShiftPhysicsGravitationActual

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : The kinetic energy needed to project a body of mass m from earth surface to infinity is 1 2 mgR , where R is the radius of earth. Reason R : The maximum potential energy of a body is zero when it is projected to infinity from earth surface. In the light of the above statements, choose the correct answer

Options

  1. AA False but R is true
  2. BBoth A and R are true and R is the correct explanation of A
  3. CA is true but R is false
  4. D(4) Both A and R are true but R is NOT the correct explanation of A

Correct answer

A. A False but R is true

Step-by-step solution

KE = 1 2 ~m ( 2 Gm R )= mgR Assertion wrong at U =0 Reason correct.

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