JEE PHYSICS MCQ: GRAVITATION

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The acceleration due to gravity on a planet is same as that on earth and its radius is 16 times that of earth. What will be the value of escape velocity on that planet if it is

{V_e}

on earth.

View answer and explanation

Correct option: C

4{V_e}

Option C (

4{V_e}

) is correct because the escape velocity is proportional to the square root of the radius, and since the radius is 16 times that of Earth, the escape velocity is 4 times that of Earth.

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11.2\mathrm{\;\;km}{\mathrm{s}^{ - 1}}

. If the body is projected in a direction making an angle of

{45^0}

with the vertical, the escape velocity will be The escape velocity of a body projected from the surface of earth is

v_e

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\theta

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