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Assertion : Let W1 be the work done in taking away a satellite from the surface of earth to its orbit and then W2 the work done in rotating the satellite in circular orbit there. Then, W1=W2 Reason : W2=GMm/2R
18
Sep
Assertion : Let W1 be the work done in taking away a satellite from the surface of earth to its orbit and then W2 the work done in rotating the satellite in circular orbit there. Then, W1=W2 Reason : W2=GMm/2R Assertion : Let W1 be the work done in taking away a satellite from the [...]
Assertion : Areal velocity of a planet around sun will becomes two times if mass of planet is halved Reason : Areal velocity =L/2m, Where L is angular momentum of planet about centre of sun.
18
Sep
Assertion : Areal velocity of a planet around sun will becomes two times if mass of planet is halved Reason : Areal velocity =L/2m, Where L is angular momentum of planet about centre of sun. Assertion : Areal velocity of a planet around sun will becomes two times if mass of planet is halved Reason [...]
A railway track runs parallel to a road until a turn brings the road to railway crossing. A cyclist rides along the road everyday at a constant speed 20 km/hr. He normally meets a train that travels in same direction at the crossing.
18
Sep
A railway track runs parallel to a road until a turn brings the road to railway crossing. A cyclist rides along the road everyday at a constant speed 20 km/hr. He normally meets a train that travels in same direction at the crossing. The balls are released from the top of a tower of height [...]
Assertion : Two spherical shells have masses m1andm2. Their radii are r1andr2. Let r be the distance of a point from centre. Then gravitational field strength and gravitational potential both are equal to zero for O
18
Sep
Assertion : Two spherical shells have masses m1andm2. Their radii are r1andr2. Let r be the distance of a point from centre. Then gravitational field strength and gravitational potential both are equal to zero for O Assertion : Angular momentum of a planet is constant about any point Reason : For acting on the planet [...]
Assertion : Mass of the rod AB is m1 and of particle P is m2. Distance between centre of rod and particle is r. Then the gravitational force between the rod and the particle is F=Gm1m2/r^2 Reason : The relation F=Gm1m2/r^2 can be applied directly only to find force between two particles.
18
Sep
Assertion : Mass of the rod AB is m1 and of particle P is m2. Distance between centre of rod and particle is r. Then the gravitational force between the rod and the particle is F=Gm1m2/r^2 Reason : The relation F=Gm1m2/r^2 can be applied directly only to find force between two particles. Assertion : Angular [...]
Assertion : Kepler’s law for planetary motion are consequence of Newton’s laws Reason : Kepler’s laws can be derived by using Newton’s laws.
18
Sep
Assertion : Kepler’s law for planetary motion are consequence of Newton’s laws Reason : Kepler’s laws can be derived by using Newton’s laws. Assertion : Kepler's law for planetary motion are consequence of Newton's laws Reason : Kepler's laws can be derived by using Newton's laws. September 18, 2020 Category: Arihant Physics by D.C Pandey [...]
Assertion : If the product of surface area and density us is same for two planets, escape velocities will be same for both. Reason : Product of surface area and density is proportional to the mass of the planet per unit radius the planet.
18
Sep
Assertion : If the product of surface area and density us is same for two planets, escape velocities will be same for both. Reason : Product of surface area and density is proportional to the mass of the planet per unit radius the planet. Assertion : If the product of surface area and density us [...]
At the same instant, ball A is dropped from top of a building of height h and ball B is projected vertically upward from the ground with velocity u. The ratio of velocity of A to the velocity of B
18
Sep
At the same instant, ball A is dropped from top of a building of height h and ball B is projected vertically upward from the ground with velocity u. The ratio of velocity of A to the velocity of B At the same instant ball A is dropped from top of a building of height [...]
Assertion : The binding energy of a satellite does not depend upon the mass of the satellite. Reason : Binding energy is the negative value of total energy of satellite.
18
Sep
Assertion : The binding energy of a satellite does not depend upon the mass of the satellite. Reason : Binding energy is the negative value of total energy of satellite. Assertion : The binding energy of a satellite does not depend upon the mass of the satellite. Reason : Binding energy is the negative value [...]
Assertion : Angular momentum of a planet is constant about any point Reason : For acting on the planet is a central force.
18
Sep
Assertion : Angular momentum of a planet is constant about any point Reason : For acting on the planet is a central force. Assertion : Angular momentum of a planet is constant about any point Reason : For acting on the planet is a central force. September 18, 2020 Category: Arihant Physics by D.C Pandey [...]