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Questions  

The mass and diameter of a planet are twice those of the earth. The period of oscillation of a pendulum on this planet will be, if it is a seconds pendulum on the earth 2.4 s

a
2.4 s
b
2.8 s
c
3.2 s
d
Infinity

detailed solution

Correct option is B

T=2πℓg;g=GMR2

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