A planet in a distant solar system is 10 times more massive than the earth and its radius is 10 times smaller. Given that the escape velocity from the earth is 11kms−1, the escape velocity (in km s−1) from the surface of the planet would be
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Mass of planet, MP=10Me, where Me is mass of earth.
Radius of planet, RP=Re10, Where Re is radius of earth.
Escape speed is given by, vP=√2GMR