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A simple pendulum has a time period 

A simple pendulum has a time period  T1 when on the earth’s surface and T2  when taken to a height R above the earth’s surface, where R is the radius of the earth. The value of T2/T1 is

(a)  1                                         (b) √2

(c)   4                                         (d)  2

Answer: d

(9)

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