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NTA Abhyas JEE Main2020PhysicsGravitationPractice

If gravitational field due to uniform thin hemispherical shell at point P is I , then the magnitude of gravitational field at Q is (Mass of hemispherical shell is M , radius is R )

Options

  1. AG M 2 R 2 - I
  2. BG M 2 R 2 + I
  3. CG M 4 R - I
  4. D2 I - G M 2 R 2

Correct answer

A. G M 2 R 2 - I

Step-by-step solution

gravitational field due to II at P = gravitational field at I at Q At P , E I + E II = G 2 m 2 R 2 = G M 2 R 2 E I = G M 2 R 2 - E II = G M 2 R 2 - I

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