A simple pendulum is executing simple harmonic motion with a time peri – McqOptions

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1.	A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the percentage increase in the time period of the pendulum of increased length is [BHU 1994, 96; Pb. PMT 1995; AFMC 2001; AIIMS 2001; AIEEE 2003]
A.	10%
B.	21%
C.	30%
D.	50%
Answer» B. 21%

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