A pendulum is taken 1 km inside the earth from sea level. Then the approximate gain or loss of time of pendulum is

A pendulum is taken 1 km inside the earth from sea level. Then the app

1.	A pendulum is taken 1 km inside the earth from sea level. Then the approximate gain or loss of time of pendulum is
Answer» it loss of 13.5 sec per day it GAIN of 13.5 sec per day it loss of 7 sec per day it gain of 7 sec per day ANSWER :C