Gravitation — practice questions
87 curated practice questions from Gravitation (Physics NEET, NTA Exams) — 27 medium, 32 easy, 28 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- The time period of revolution of planet X around the Sun is 8 times that of Y. The distance of planet X from the Sun is…
- The angular velocity of rotation of a star (of mass M and radius R) at which matter will start escaping from its…
- If R is the radius of the earth and g is the acceleration due to gravity on the earth surface. Then the mean density of…
- Planet A has mass M and radius R. Planet B has half the mass and half the radius of Planet A. If the escape velocities…
- An Earth satellite is moved from one stable circular orbit to a farther stable circular orbit. Which one of the…
- A geo-stationary satellite orbits around the Earth in a circular orbit of radius 36000 km. Then, the time period of a…
- Kepler's second law states that the radius vector drawn to a planet from the Sun sweeps out equal areas in equal…
- A body of mass 60 g experience a gravitational force of 3.0 N. When placed at a particular point. The magnitude of the…
- Satellite A of mass m is at a distance of r from the centre of the Earth. Another satellite B of mass 2m is at a…
- Given below are two statements Statement I : Moon travellers tie heavy weight at their back before landing on the moon…
- A satellite is revolving around the planet. The gravitational force between them varies with R ^ -5 / 2 , where R is…
- A body of mass m is placed on the Earth's surface. It is then taken from the Earth's surface to a height h = 3R, then…
- According to Kepler's law the time period of a satellite varies with its radius as
- Given below are two statements Statement I : If earth suddenly stops rotating about its axis, then the value of…
- At a point P the value of g is only 25% of its value on the Earth surface. The height of the point P above the surface…
- The height vertically above the Earth's surface at which the acceleration due to gravity becomes 1% of its value at the…
- A particle of mass 'm' is projected with a velocity v = kV e (k < 1) from the surface of the earth. (V e = escape…
- A body attains a height equal to the radius of the Earth. The velocity of the body with which it was projected is:
- Mass of the Moon is 1/81 times that of the Earth and radius is 1/4 times that of the Earth. If the escape velocity at…
- A satellite in a circular orbit of radius R has a period of 4 h. Another satellite with orbital radius 3R around the…
- A satellite orbiting the Earth in a circular orbit of radius R completes one revolution in 3 hours. If orbital radius…
- Kepler's third law of planetary motion when stated for circular orbits, has the form (v = orbital velocity of a planet…
- The kinetic energy needed to project a body of mass m from the Earth's surface (radius R) to infinity is
- The change in the gravitational potential energy when a body of mass m is raised to a height nR above the surface of…
- The escape velocity on the surface of the Earth is 11.2 km/s. If mass and radius of a planet is 4 and 2 times…
- The escape velocity for a body projected vertically upwards from the surface of the Earth is 11.2 km/s. If the body is…
- The escape velocity from the Earth's surface is 11.2 km/s. A certain planet has a radius 2R, twice that of the Earth…
- If change in the value of g at a height h above the surface of the Earth is the same as at a depth d below its surface…
- The weight of a body on surface of the Earth is 12.6 N. When it is raised to a height half the radius of the Earth, its…
- If the density of the Earth is doubled keeping its radius constant, then acceleration due to gravity is: [Take : g = 10…
- An asteroid of mass m is approaching the Earth, initially at a distance of 10R e with speed v i . It hits the Earth at…
- Planet Jupiter is 5.2 times farther from the Sun as compared to the Earth's distance from the Sun. The time period of…
- What will be the change in acceleration due to gravity when the Earth shrinks by 1% in its radius?
- A body weighs W newton at the surface of the Earth. Its weight at a height equal to half the radius of the Earth, will…
- Assertion: The magnitude of acceleration due to gravity on the moon is one-sixth that on the Earth. Reason: The law of…
- A man can jump 1.5 m on Earth. Calculate the approximate height he might be able to jump on a planet whose density is…
- A body of mass M is taken from the surface of the Earth to a height equal to the radius of the Earth. The subsequent…
- At an altitude R from the surface of the Earth of radius R, the weight of the body of 1 kg mass is 3 N. At twice the…
- According to Kepler's law of planetary motion if T represents time period and r is orbital radius, then for two planets…
- A satellite is revolving around the Earth in a circular orbit. The following statements are given It is moving with a…
- A satellite is revolving around the Earth in a circular orbit at an altitude of 0.6 x 10 6 m. At such an altitude, the…
- A satellite is orbiting just above the surface of the earth with period T. If d is the density of the earth and G is…
- A planet is revolving in an elliptical orbit around the Sun. Its closest distance from the Sun is r and the farthest…
- Weight of a body of mass m decreased by 1% when it is raised to height h above the Earth's surface. If the body is…
- Energy required to move a body of mass m from an orbit of radius 2R to 3R is
- If the Earth stops rotating about its axis, then the acceleration due to gravity will remain unchanged at
- The density of newly discovered planet is twice that of Earth. The acceleration due to gravity at the surface of the…
- Given below are two statements Statement I : If an object is projected from earth surface with escape velocity path of…
- Suppose a planet is in orbit at a radius R around the Sun. The gravitational force acting on it varies inversely as n…
- What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R…
- The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth…
- The Earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the Earth…
- The radius of orbit of a planet is two times that of the Earth. The time period of planet is
- A satellite of mass m is revolving around the Earth at radius R with time period T. Which of The following statement is…
- The distance of Saturn and Neptune from the Sun is nearly 10 12 m and 10 13 m respectively. Assuming they move in…
- Two masses m and M are situated in air. The gravitational force between them is F. The space around the masses is now…
- An Earth satellite S has an orbit radius which is 4 times that of communication satellite C. The period of revolution…
- The gravitational potential energy of a body of mass m at a distance r from the centre of the Earth is U. What is the…
- A planet in a distant solar system is 10 times more massive than the Earth and its radius is 10 times smaller. Given…
- A satellite of mass m revolves around the Earth of radius R at a height x from its surface. If g is the acceleration…
- The time-period of a satellite of the Earth is 5 hours. If the separation between the Earth and the satellite is…
- A Rocket is fired vertically from the surface of Mars with a speed of 2 km/s. If 20% of its initial energy is lost due…
- The orbital angular momentum of a satellite revolving at a distance r from the center of the earth is L. The angular…
- A body weighs 2.8 N on the surface of the Earth. If it is taken to a planet, whose mass is 1/7 and radius half that of…
- A black hole is an object whose gravitational field to so strong that even light cannot escape from it. To what…
- The depth at which the effective value of acceleration due to gravity is g 4 is: (R = radius of the Earth)
- If g be the acceleration due to gravity at the Earth surface, then what will be the increase in potential energy if an…
- A planet is moving in an elliptical orbit around the Sun. T, U, E, L stand respectively for its kinetic energy…
- Assuming that the Earth is sphere and of radius R, gravitational acceleration on its surface g and mass m, then its…
- A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be…
- Imagine a new planet having the same density as that of the Earth but it is 3 times bigger than the Earth in size. If…
- Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the…
- The height 'h' at which the weight of a body will be the same as that at the same depth 'h' from the surface of the…
- If the radius of the Earth is reduced by 2% keeping its mass constant, then the weight of the body on its surface will:
- If the potential energy of a body on a planet is numerically U and the escape velocity for the same body be v e for the…
- The mass of the Moon is 1/81 of that of the Earth but the gravitational pull is 1/6 times that of the Earth. It is due…
- A particle falls from rest towards the Earth from infinity. Its velocity on reaching the Earth would be:
- If M is the mass of the Earth and R its radius. Then the ratio of the gravitational acceleration and the gravitational…
- If the distance between the Earth and the Sun were half its present value, the number of days in a year would have been
- A particle is projected vertically upwards from the surface of the Earth (radius R) with kinetic energy equal to half…
- A body is thrown up with a velocity 10% more than escape velocity v e . When the body escapes the gravitational pull of…
- Imagine a light planet revolving around a massive star in a circular orbit of radius R with a period of revolution T…
- If a person with a spring balance and a body hanging from it goes up and up in an aeroplane, then the reading of the…
- Acceleration due to gravity is g on the surface of the Earth. Then, the value of the acceleration due to gravity at a…
- A satellite of mass m is launched vertically upwards with an initial speed u from the surface of the earth. After it…
- A star 2.5 times the mass of the Sun and collapsed to a size of 12 km rotates with a speed of 1.5 rev/s. Then an object…