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The escape velocity from the earth is about 11km /s. The escape velocity from a planet having twice the radius and the same mean density as the earth, is

(a) 22 km/s 

(b) 11 km/s 

(c) 5.5 km/s 

(d) 15.5 km/s

1 Answer

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Best answer

Correct option (a) 22 km/s

Explanation

ρ= constant. Since the planet having double radius in comparison to earth therefore the escape velocity becomes twice i.e. 22 km/ s.

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