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  4. Assertion: The gravitational force on a particle inside a spherical shell is zero. Reason: The shell shields other bodies outside it from exerting gravitational forces on a particle inside.

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Q. Assertion : The gravitational force on a particle inside a spherical shell is zero.
Reason : The shell shields other bodies outside it from exerting gravitational forces on a particle inside.

Gravitation

Solution:

The gravitational force on a particle inside a spherical shell is zero. However, unlike a metallic shell which shields electrical forces, the shell does not shield other bodies outside it from exerting gravitational forces on a particle inside.