Question

The time period of a simple pendulum is 2 sec. If its length is increased 4 times, then its period becomes [CBSE PMT 1999; DPMT 1999]
A) 16 sec B) 12 sec C) 8 sec D) 4 sec

Answer 1

hey.....here is your answer

the time period of a simple pendulum is 2 sec.If its length is increased 4 times,then its period becomes【c.8sec】

bcoz:- time period × length increased
= 2sec.×4times
=8seconds..

I hope this answer will helpful to u

Answer 2

Answer:

Explanation: That's wrong above in reality the relation in T=2pi*root l/g

Then t is directly proportional to the root of the length

Take T/t.