Q 1166701675.     The amplitude of a simple pendulum oscillating in air with a small spherical bob, decreases from `10` cm to `8 ` cm in `40` seconds. Assuming that the Stokes law is valid, and ratio of the coefficient of viscosity of air to that of carbon dioxide is 1.3, the time in which the amplitude of the pendulum will reduce from `10` cm to `5 ` cm in carbondioxide will be close to` (ln5=1.601, ln2 =0.693)`

A

`231` seconds

B

`208` seconds

C

`161` seconds

D

`142` seconds

0
Success Rate: NAN %
Sr. No.SubjectTagCorrectRecorded Answer