1.

The period of the pendulum is directly proportional to the square root of the length of the string. The period of such a pendulum with string of length 16 cm is 52 seconds. Find the length of the string if the period is 65 seconds :

Answer»

(A) 4.5 cm
(B) 5 cm
(C) 6 cm
(D) NONE of these

Answer :D


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