Physics questions
20027 published questions with worked solutions.
- The magnitude of gravitational field at distances r_1 and r_2 from the centre of a uniform sphere of radius R and mass M are I_1...
- Three particles each of mass M are kept at vertices of an equilateral triangle of side L. The gravitational field at centre due...
- At what height, the gravitational field reduces by 75% the gravitational field at the surface of earth?
- A uniform solid sphere of mass m and radius r is surrounded symmetrically by a uniform thin spherical shell of radius 2r and mass...
- Two particles of masses m and M are placed a distance d apart. The gravitational potential at the position where the...
- A thin rod of length L is bent to form a semicircle. The mass of rod is M. What will be the gravitational potential at the centre...
- A particle is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done per unit mass...
- Find the potential energy of 4-particles, each of mass 1 kg placed at the four vertices of a square of side length 1 m.
- The magnitude of gravitational potential energy of a body at a distance r from the centre of earth is u. Its weight at a distance...
- Energy required in moving a body of mass m from a distance 2R to 3R from centre of earth of mass M is
- If a body of mass m has to be taken from the surface to the earth to a height h = 4R, then the amount of energy required is (R =...
- For motion of planets in elliptical orbits around the sun, the central force is
- Law of areas is valid for any
- If the radius of earth's orbit is made (1/4) th, then duration of an year will become
- The period of revolution of planet A around the sun is 8 times that of B. The distance of A from the sun is how many times...
- Kepler's third law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of...
- A satellite in a circular orbit of radius R has a period of 4 h. Another satellite with orbital radius 3R around the same planet...
- The time period of a satellite of earth is 5 h. If the separation between the earth and the satellite is increased to 4 times the...
- A body is orbiting around the earth at a mean radius which is two times as greater as the parking orbit of a satellite. The...
- Which of the following statements is correct about satellites?