Physics questions
20027 published questions with worked solutions.
- When a satellite moves around the earth (consider elliptical orbits),
- Statement 1: A body weighs X newton on the surface of the earth. Its weight at a height equal to half the radius of the earth...
- Statement 1: Two solid spheres of radius r and 2r, made of same material, are kept in contact. The mutual gravitational force of...
- If the distance between the sun and the earth is increased by three times, then attraction between two will
- The gravitational force on a body of mass 5 kg at the surface of the earth is 50 N. If earth is a perfect sphere, the...
- A body weighs 63 kg-wt on the surface of earth. Its weight on the surface of Mars will be (Mass of Mars = 19 mass of earth,...
- The radius of the Earth is about 6400 km and that of Mars is about 3200 km. The mass of the Earth is about 20 times the mass of...
- Acceleration due to gravity at earth's surface is 10 m ,s^ -2 . The value of acceleration due to gravity at the surface of a...
- The value of universal gravitational constant G in M.K.S. system is 6.67 10^ -11 Nm^2/kg^2 . Its value in C.G.S. system is
- Who among the following did first give the experimental value of G?
- A body weighs 81 N on the surface of the earth. What is the gravitational force on it due to earth at a height equal to half the...
- Radius of earth is 6 10^ 6 m. Acceleration due to gravity is equal to 9.8 m/s^2 . Gravitational constant G is equal to 6.67 10^...
- Two satellites A and B go round a planet P in circular orbits having radii 4R and R respectively. If the speed of the satellite A...
- The orbital velocity of a satellite very near to the surface of earth is v. What will be its orbital velocity at an altitude 7...
- Two satellites of masses m and 4m orbit the earth in circular orbits of radii 4r and r respectively. The ratio of their orbital...
- The critical velocity of a satellite of mass 100 kg is 20 km/hr. The critical velocity of another satellite of mass 200 kg in the...
- The orbital speed of Jupiter is
- Time period of revolution of a nearest satellite around a planet of radius R is T. Period of revolution around another planet,...
- The time period of a satellite in a circular orbit of radius R is T. The radius of the orbit in which time period is 8 T is
- A satellite is moving very close to a planet of density 8 10^ 3 kg ,m^ -3 . If G=6.67 10^ -11 Nm^2kg^ -2 , then the time period...