Arun has suspended a pendulum with a fine thread of length l1 and set it in a motion. He measured the time taken by the bob to reach from one extreme position to other extreme position with a clock as 0.2 seconds. Now Rithu, his friend asked him to repeat the same by replacing fine thread of length l2 which is 4 times the length l1, meanwhile the batteries in the clock which Arun is using to measure the time are dead and clock stopped working. Hence, he is unable to record time taken by the bob in after replacement of the thread. Help him solving the following question. What is the frequency in case of length l1?
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Mjak chl rha hai itna bra question koi bhejta hia kya
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