A pendulum that beats seconds on the surface of the earth were taken to a depth of (1//3) th the radius of the earth. What will be its time period of oscillation?

A pendulum that beats seconds on the surface of the earth were taken t

1.	A pendulum that beats seconds on the surface of the earth were taken to a depth of (1//3) th the radius of the earth. What will be its time period of oscillation?
Answer» `SQRT(6)SEC` `sqrt(5)sec` `sqrt(2)sec` `sqrt(3)sec` Answer :A