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Q.

The gravitational field due to a uniform solid sphere of mass M and radius a at the centre of the sphere is
[UK PMT 2015]

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a

zero

b

$\frac{G M}{a^{3}}$

c

$\frac{G M}{a^{2}}$

d

$\frac{G M}{2 a}$

answer is D.

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Detailed Solution

The gravitational field at the centre of a solid sphere of mass M is zero.

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