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A solid sphere of radius R/2 is cut out ...

A solid sphere of radius R/2 is cut out of a solid sphere of radius R such that the spherical cavity so formed touches the surface on one side and the centre of the sphere on the other side, as shown. The initial mass of the solid sphere was M. If a particle of mass m is placed at a distance 2.5R from the centre of the cavity, then what is the gravitational attraction on the mass m?

A

be a fine sharp slit white in colour at the centre

B

a bright slit white at the centre diffusing to zero intensities at the edges

C

a bright slit white at the centre diffusing to regions of different colour

D

only be a diffused slit white in colour

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The correct Answer is:
A
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AAKASH SERIES-WAVES OPTICS-EXERCISE -IA
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