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The height of the point vertically above...

The height of the point vertically above the earth's surface, at which acceleration due to gravity becomes 1% of its value at the surface is (Radius of the earth =R)

A

8R

B

9R

C

10R

D

20R

Text Solution

Verified by Experts

The correct Answer is:
B
`g.=g/((1+h/R)^2)rarr0.01g=g/((1+h/r)^2)`
`rArr0.1=R/(R+h)=h=(0.09)/(0.1)R=9R`
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