The bob of a simple pendulum takes a totat time of 1.5 s to go trom B to A and then from A to O as shown. Then
(1) it will complete 20 oscillations in 40s
(2) it will complete 20 oscillations in 20s
(3) it will complete 50 oscillations in 75s
(4) it will complote 50 osciallations in 100s
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Answer:
it will complete 20 oscillations in 40s
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