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Standard XII
Physics
Center of Mass as an Average Point
Question

The gravitational field strength inside a hollow sphere (mass M and radius R ) at a distance r from centre is :

A
Zero
B
−GMr2
C
GMr2
D
−GMr
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Solution
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The gravitational field strength inside a hollow sphere is zero, because'if you take imaginary sphere inside the hollow sphere then mass contain inside the sphere will be zero.
The correct option is A.

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