JEE Main Physics: Gravitation Practice Questions
24 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.
- Q1.What is the value of the acceleration due to gravity at the center of the Earth?Easy
- Q2.If the mass of a planet is doubled and its radius is also doubled, what happens to the acceleration due to gravity on its surface?Easy
- Q3.Which of the following is the correct unit for the universal gravitational constant G?Easy
- Q4.The orbital velocity of a satellite revolving near the surface of the Earth depends on which of the following?Easy
- Q5.What is the escape velocity from the surface of the Earth?Easy
- Q6.A satellite is orbiting the Earth at a height equal to the radius of the Earth. What is the ratio of its orbital speed to the escape velocity from the surface oMedium
- Q7.If the mass of the Earth were to double and its radius were to be halved, what would be the new acceleration due to gravity on its surface?Medium
- Q8.A particle is projected vertically upwards from the surface of the Earth with a velocity equal to half the escape velocity. What is the maximum height reached bMedium
- Q9.Two spheres of mass M and 4M are separated by a distance d. At what distance from the sphere of mass M is the gravitational potential zero?Medium
- Q10.A planet revolves around the Sun in an elliptical orbit. If the ratio of the maximum and minimum distances from the Sun is 4, what is the ratio of the maximum aMedium
- Q11.A particle is projected vertically upwards from the surface of the earth with a velocity equal to half of the escape velocity. The maximum height reached by theHard
- Q12.A satellite is orbiting the earth in a circular orbit of radius r. A small impulse is given to the satellite such that its velocity increases by a factor of alpHard
- Q13.A particle is dropped from a height h above the surface of the earth. If the time taken to reach the surface is t, what is the expression for t considering theHard
- Q14.The escape velocity from the Earth is 11.2 km/s. If a body is projected with a velocity twice the escape velocity, what will be its velocity in interstellar spaMedium
- Q15.Two planets have radii R1 and R2 and densities rho1 and rho2 respectively. What is the ratio of the acceleration due to gravity on their surfaces?Medium
- Q16.A particle of mass m is placed at the center of a spherical shell of mass M and radius R. What is the gravitational potential at the center?Medium
- Q17.If the mass of the Earth were to double and its radius were to be halved, the acceleration due to gravity on its surface would become how many times its presentMedium
- Q18.Two identical stars of mass M orbit around their common center of mass in a circular orbit with a separation distance d. A small planet of mass m is placed at tHard
- Q19.Three particles of mass m are placed at the vertices of an equilateral triangle of side length a. A fourth particle of mass m is placed at the centroid of the tHard
- Q20.A tunnel is bored through the earth along a chord that does not pass through the center. A particle is dropped into the tunnel. What is the nature of the motionHard
- Q21.A satellite is orbiting the earth in a circular orbit of radius r. If the earth suddenly shrinks to half its radius without changing its mass, what will happenHard
- Q22.The orbital velocity of a satellite revolving close to the Earth's surface depends on which of the following?Easy
- Q23.If the mass of the Earth were to double while its radius remained the same, what would happen to the acceleration due to gravity on its surface?Easy
- Q24.According to Kepler's second law, a planet sweeps out equal areas in equal intervals of time. This law is a consequence of the conservation of which quantity?Easy
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