A student performs experiment with a simple pendulum and measure time period for 20 vibrations. If he measures time for 100 vibrations the error in the measurement of time period will be reduced by a factor of

A student performs experiment with a simple pendulum and measure time

1.	A student performs experiment with a simple pendulum and measure time period for 20 vibrations. If he measures time for 100 vibrations the error in the measurement of time period will be reduced by a factor of
Answer» 10 `20` `5` `80` ANSWER :C