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Questions  

Pendulum beating seconds at the equator (g = 978 cm / sec2) is taken to Antarctica (g=983 cm/sec2). If initial length is 100cm its length is to be increased by

a
0.1 cm
b
0.2 cm
c
0.4 cm
d
0.5 cm

detailed solution

Correct option is D

T=2πg; 1=100cm( seconds pendulum) 21=g2g1=983978211=9839781=98397897821=100×983978978=0.5cm

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