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Mars has a diameter of approximately 0.5...

Mars has a diameter of approximately 0.5 of that of earth, and mass of 0.1 of that of earth. The surface gravitational field strength on mars as compared to that on earth is a factor of -

A

`0.1 `

B

`0.2`

C

`2.0`

D

`0.4`

Text Solution

Verified by Experts

The correct Answer is:
D
`g_(E)=(GM_(E ))/(R_(E )^(2)),g_(M ) =(GM _(M ))/(R_(M )^(2))`
`g_(m ) =(G (0.1 M_(E )))/(( 0.5 R_(E) )^(2))= 0.4 g_(E )`
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