In a seconds pendulum, mass of bob is 30 gm. If it is replaced by 90 g – McqOptions

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1.	In a seconds pendulum, mass of bob is 30 gm. If it is replaced by 90 gm mass. Then its time period will [Orissa PMT 2001]
A.	1 sec
B.	2 sec
C.	4 sec
D.	3 sec
Answer» C. 4 sec

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