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If the density of a small planet is the ...

If the density of a small planet is the same as that of earth while the radius of the planet is `0.2` times that of the earth the gravitational on the surface of that planet is :

A

0.2 g

B

0.4 g

C

2 g

D

4 g

Text Solution

Verified by Experts

The correct Answer is:
A
`g=4/3pipGR,gpropR`
`therefore(g_1)/(g_2)=R/(0.2R)=5rArrg_2=g/5=0.2g`
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