A pendulum has time period T in air. When it is made to oscillate in water, it acquireda time period T= sqrt(2)T. The density of the pendulum bob is equal to (density of water = 1)

A pendulum has time period T in air. When it is made to oscillate in w

1.	A pendulum has time period T in air. When it is made to oscillate in water, it acquireda time period T= sqrt(2)T. The density of the pendulum bob is equal to (density of water = 1)
Answer» `SQRT(2)` `2` `2sqrt(2)` `1` ANSWER :B