JEE PHYSICS MCQ: GRAVITATION

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The height above surface of earth where the value of gravitational acceleration is the value of
gravitational acceleration is one fourth of that at surface, will be

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Correct option: D

{{R_e}}

Option D (

R_e

) is correct because it satisfies the condition where the gravitational acceleration is one-fourth of its value at the surface of the Earth.

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The escape velocity for a body projected vertically upwards from the surface of the earth is

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

. If the body is projected at an angle

\theta

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