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  4. If gravitational field intensity is E at distance R / 2 outside from then surface of a thin shell of radius R, the gravitational field intensity at distance R / 2 from its centre is

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Q. If gravitational field intensity is $E$ at distance $R / 2$ outside from then surface of a thin shell of radius $R$, the gravitational field intensity at distance $R / 2$ from its centre is

Gravitation

Solution:

Gravitational field intensity at every point inside a hollow spherical shell of uniform density is zero, because gravitational field due to various regions of the spherical shell cancels each other completely as their vector sum is zero.