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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as

The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as

a small star is in a circular orbit of radius R. Then the period of revolution T depends on R as The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region