A particle of mass m is placed inside a spherical shell, away from its centre. The mass of the shell is M.

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The particle will move towards the centre

The particle will move away from the centre, towards the nearest wall

The particle will move towards the centre if m < M, and away from the centre if m > M

The particle will remain stationary

answer is D.

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Detailed Solution

Inside a spherical shell intensity of gravitational field is zero . So the particle does not experience any gravitational force . Hence option - (4) is right.

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