Two pendulums of different lengths are in phase at the mean position at a certain instant. The minimum time after which they will be again in phase is 5T/4, where T is the time period of shorter pendulum. Find the ratio of lengths of the two pendulums:

Two pendulums of different lengths are in phase at the mean position a

1.	Two pendulums of different lengths are in phase at the mean position at a certain instant. The minimum time after which they will be again in phase is 5T/4, where T is the time period of shorter pendulum. Find the ratio of lengths of the two pendulums:
Answer» `1:16` `1:4` `1:2` `1:25` ANSWER :D