Two simple pendulums A and B are made to...

Two simple pendulums A and B are made to oscillate simultaneously and it is found that A completes 10 oscillations in 20 sec and B completes 8 oscillations in 10 sec. The ratio of the lengths of A and B is

`(25)/(64)`

`(64)/(25)`

`8/5`

`5/4`

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