The
ratio of M.O.I of thin walled cylinder to M.O.I of solid sphere is
a) 2/5
b) 5/2
c) ½
d) 2
Explanation: The ratio of the moment of inertia (M.O.I) of a thin-walled cylinder to
the M.O.I of a solid sphere is 5/2. The moment of inertia of a thin-walled
cylinder is (1/2)MR2, while the moment of inertia of a solid sphere
is (2/5)MR2. Taking the ratio of these two expressions yields 5/2.
If a sound note has intensity (I) , equal to faintest audible sound
a) 0dB
b) 10 dB
c) 20dB
d) 30 dB
If the pendulum completes exactly 12 cycles in 2.0min,
what is the frequency of the pendulum?
a) 0.10HZ
b) 0.17HZ
c) 6.0HZ
d) 10HZ
Explanation: f=N/T
N=12 cycles and T= 2.0min = 2× 60sec =120sec
So f=12/120=0.10HZ
