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An astronaut on a strange planet finds t...

An astronaut on a strange planet finds that acceleration due to gravity is twice as that on. the surface of earth. Which of the following could explain this?

A

Both the mass and radius of the planet are half as that of earth

B

Radius of the planet is half as that of earth, but the mass is the same as that of earth

C

Both the mass and radius of the planet are twice as that of earth

D

Mass of the planet is half as that of earth, but radius is same as that of earth

Text Solution

Verified by Experts

The correct Answer is:
A
`g=(GM)/(R^2),` both radius and mass is half
`g.=(GM/2)/((R/2)^2)=2g`
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