Q.

The value of g will be 1% of its value at the surface of earth at a height of (Re = 6400 km) :

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a

6400 km

b

57600 km

c

2560 km

d

64000 km

answer is B.

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Detailed Solution

g=g0R2R+h2  ⇒  h=Rg0g-1=6400×10.01-1=57600 km
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