Published by:
CGP EDU Academic Team
Published on: August 21, 2026
The ratio of the radius of gyration of a thin uniform disc about an axis passing through its centre and normal to its plane to the radius of gyration of the disc about its diameter is
A
2 : 1
B
: 1
C
4:1
D
1 : 
Text Solution
Verified by ExpertsThe correct answer is:
As we know,
The moment of inertia of a solid disc rotating about the axis passing through its centre will be
...(1)
Similarly, moment of inertia of solid disc rotating about its diameter will be.
…(2)
Thus, by dividing equation 1 and 2 we get
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