A point mass m is placed inside a spherical shell of radius R and mass M at a distance R/2 from the centre of the shell. The gravitational force exerted by the shell on the point mass is ___________ a) GMm/R2 b) GMm/R c) Zero d) 4GMm/R2

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A point mass m is placed inside a spherical shell of radius R and mass M at a distance R/2 from the centre of the shell. The gravitational force exerted by the shell on the point mass is ___________

a) GMm/R2

b) GMm/R

c) Zero

d) 4GMm/R2

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