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There is a shell of mass M and density of the shell is uniform. The work done to take a point mass from point A to B is [ AB = r ]

Options

  1. AGmM r
  2. BGmM R
  3. C- GmM r
  4. Dzero

Correct answer

D. zero

Step-by-step solution

Gravitaional field inside the shell is zero, so no work required.

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