A pendulum beating seconds at one place (g = 985cm//"sec"^(2)) is taken to another place (g = 981cm//sec^(2)). If it is to beat seconds at another place, its length is to be decreases by

A pendulum beating seconds at one place (g = 985cm//"sec"^(2)) is take

1.	A pendulum beating seconds at one place (g = 985cm//"sec"^(2)) is taken to another place (g = 981cm//sec^(2)). If it is to beat seconds at another place, its length is to be decreases by
Answer» 0.1cm 0.2cm 0.4cm 0.5cm Answer :C