Physics questions
20027 published questions with worked solutions.
- A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an orbit of...
- The angular velocity of rotation of a star (of mass M and radius R) at which the matter starts to escape from its equator is
- A satellite has kinetic energy K, potential energy V and total energy E. Which of the following statements is true? [WB-JEE 2015]
- If g is the acceleration due to gravity on the earth's surface, then the change in potential energy of the earth at a height...
- A satellite is moving with a constant speed 'v' in a circular orbit about the earth. An object of mass 'm' is ejected from the...
- How much energy will be required if a mass of 100 kg escapes from the earth? (R_e=6.4 10^ 6 m, g=10 ms^ -2 ) [MH-CET 2001]
- The radius of a planet is 1/4th of earth's radius and its acceleration due to gravity is double to earth's acceleration due to...
- Escape velocity on a planet is v_e. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes
- A body of mass 'm' is raised to a height '10 R' from the surface of earth, where 'R' is the radius of earth. The increase in...
- Given mass of the moon is 1/81 of the mass of the earth and corresponding radius 1/4 of the radius of earth. If escape velocity...
- The escape velocity of a body on an imaginary planet which is thrice the radius of the earth and double the mass of the earth is...
- The escape velocities of the two planets, of densities _1 and _2 and having same radius, are v_1 and v_2 respectively. Then...
- A black body is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate...
- Gas escapes from the surface of a planet because it acquires an escape velocity. The escape velocity will depend on which of the...
- The escape velocity from the surface of earth is v_e. The escape velocity from the surface of a planet whose mass and radius are...
- A body of mass 'm' is taken from the earth's surface to the height equal to twice the radius (R) of the earth. The change in...
- A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity...
- If R is the radius of earth and g is acceleration due to gravity on the surface of the earth, then binding energy of the...
- A body of mass m is placed on the earth's surface. It is taken from the earth's surface to a height h=3R. The change in...
- The escape velocity of a particle of mass m varies as