MHT CET Physics question
Two circular loops P and Q of radii 'r' and 'nr' respectively are made from a uniform wire. Moment of inertia of Q about its axis is 4 times that of P about its axis. The value of n is [MHT-CET 2019, MHT-CET 2019]
Answer: (B)
Solution
, so and ; , 2 and do not satisfy . Hence the correct option is (b).