Published by:
CGP EDU Academic Team
Published on: August 14, 2026
PART-I PHYSICS
The mass density of a spherical galaxy 
varies as 
over a large distance ' 
' from its centre. In that region, a small star is in a circular orbit of radius 
. Then the period of revolution, 
depends on 
as:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Mass of galaxy 
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