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The ratio of the radius of the earth to ...

The ratio of the radius of the earth to that of moon is 10. The ratio of acceleration due to gravity on earth and on moon is 6. The ratio of their escape velocity from earth to that from the moon is :

A

10

B

5

C

about 8

D

1.66

Text Solution

Verified by Experts

The correct Answer is:
C
`(R_(e ))/(R_(m))=10, (g_(e ))/(g_(m))=6` Now `(v_(e ))/(v_(m)) =sqrt((2g_(e )R_(e ))/(2g_(m)R_(m)))=sqrt(60)`
`=7.74~8`
Hence, the correct choice is (c ).
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