The period of oscillation of abob suspended by a string oflength L is 2pisqrt(l/g). This expression is valid only for

The period of oscillation of abob suspended by a string oflength L is

1.	The period of oscillation of abob suspended by a string oflength L is 2pisqrt(l/g). This expression is valid only for
Answer» A light bob and no friction SMALL amplitude of oscillation and a small vov A bob of LOW density A bobo which is not FERROMAGNETIC and large amplitude Answer :B