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The magnitudes of the gravitational force at distances and from the centre of a uniform sphere of radius R and mass M are and respectively. Then
detailed solution
Correct option is A
g=43πρGr ∴g∝r if rTalk to our academic expert!
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A solid sphere of uniform density and radius R applies a gravitational force of attraction equal to F1 on a particle placed at
P, distance 2R from the centre O of the sphere. A spherical cavity of radius R/2 is now made in the sphere as shown in figure. The sphere with cavity now applies an gravitational force F2 on same particle placed at P. The ratio F2/ F1 will be
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