NEET Physics Gravitation MCQs

A satellite is in a low, circular orbit around Earth. A small, impulsive retro-rocket burn is executed, reducing the satellite's speed by a small amount $\Delta v$. Which of the following best describes the resulting orbit immediately after the burn?

A planet has a radius R and density $\rho$. A satellite is launched from its surface with a speed $v = \sqrt{\frac{8}{9} \frac{4\pi G\rho R^2}{3}}$. The maximum height attained by the satellite above the planet's surface is:

If the escape velocity at the surface of a planet is $v_e$, and a projectile is launched vertically with a speed of $\frac{v_e}{\sqrt{2}}$, the maximum height reached by the projectile above the surface is:

A particle is projected vertically upwards from the surface of Earth with a velocity equal to half the escape velocity. Neglecting air resistance, what fraction of its initial kinetic energy will be its gravitational potential energy at the highest point?

An object is projected vertically upwards from the surface of Earth with a velocity half the escape velocity. What is the maximum height reached by the object (ignoring air resistance)? (R = Radius of Earth)

A body is projected vertically upwards from the surface of Earth with a velocity equal to half the escape velocity. What is the maximum height reached by the body in terms of Earth's radius $R$?

A projectile is fired upwards from the surface of the earth with a velocity $k{V_e}$ where ${V_e}$ is the escape and $K < 1$. If r is the maximum distance from the center of the earth to which it rises and R is the radius of the earth then r equals

At what height from the surface of earth the total energy of a satellite is equal to its potential energy at a height of 2R from surface of earth…. (R = Radius of earth)

A body is released from height equal to radius R of the earth. The velocity of body with which it will strike the earth surface is

A particle falls towards earth from infinity. It’s velocity on reaching the earth would be