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JEE Main202127 Aug 2021Evening ShiftPhysicsGravitationActual

A mass of 50 kg is placed at the center of a uniform spherical shell of mass 100 kg and radius 50 m . If the gravitational potential at a point, 25 m from the center is V kg m - 1 . The value of V is:

Options

  1. A+ 2 G
  2. B- 20 G
  3. C- 4 G
  4. D- 60 G

Correct answer

C. - 4 G

Step-by-step solution

Use the formula of the gravitational potential in terms of universal gravitational constant, V = - G M R ⇒ V p = - G ( 100 ) 50 - G ( 50 ) 25 = - 4 G .

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