A planet has the same average density as Earth but its radius is twice that of Earth

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A planet has the same average density as Earth but its radius is twice that of Earth. By what factor will the escape speed from its surface differ from Earth’s escape speed? (a) 44 times (b) 2\sqrt{2} times (c) 22 times (d) 11 time (no change)

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