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If R is the radius of the earth , the he...

If R is the radius of the earth , the height from its surface at which the acceleration due to gravity is `9%` of its value at the surface is

A

`(10R)/(2)`

B

`(7R)/(3)`

C

`(91R)/(9)`

D

9R

Text Solution

Verified by Experts

The correct Answer is:
b
`9=100((R)/(R+h))^(2),((R+h)/(R))=(10)/(3)`
`(h)/(R)=(10)/(3)-1=(7)/(3).`
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