Arihant Physics by D.C Pandey

If radius of the earth is R then the height h at which the value of g becomes one – fourth is If radius of the earth is R then the height h at which the value of g becomes one - fourth is September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter [...]

The mass of a planet is twice the mass of earth and diameter of the planet is thrice the diameter of the earth, then the acceleration due to gravity on the planet’s surface The mass of a planet is twice the mass of earth and diameter of the planet is thrice the diameter of the [...]

A sphere of mass M and radius R2 has a concentric cavity of radius R1 as shown in figure The force F exerted by the sphere on a particle of mass m located at a distance r from the centre of sphere varies as (0≤r≤∞) . A body attains a height equal to the radius [...]

If the mass of moon is M/81, where M is the mass of earth, find the distance of the point where gravitational field due to earth and moon cancel each other, from the centre of moon. Given the distance between centres of earth and moon is 60 R where R is the radius of earth [...]

A body attains a height equal to the radius of the earth. The velocity of the body with which it was projected is. A body attains a height equal to the radius of the earth. The velocity of the body with which it was projected is. September 18, 2020 Category: Arihant Physics by D.C Pandey [...]

A planet of mass m moves around the sun of mass M in an elliptical orbit. The maximum and minimum distances of the planet from the sun are r1 and r2 respectively. The time period of the planet is proportional to: Gravitational field at the centre of a semicircle formed by a thin wire AB [...]

A ring of mass m1 and radius R is fixed in space at some location. An external agent brings a point mass m2 from infinity to centre of the ring. Work done by the external agent will be A ring of mass m1 and radius R is fixed in space at some location. An external [...]

A mass m is at a distance a from one end of a uniform rod of length l and mass M. The gravitational force on the mass due to the rod is. A mass m is at a distance a from one end of a uniform rod of length l and mass M. The gravitational [...]

A tank is filled to a height H. The range of water coming out of a hole which is a depth H/4 from the surface of water level is A tank is filled to a height H. The range of water coming out of a hole which is a depth H/4 from the surface of [...]

Gravitational field at the centre of a semicircle formed by a thin wire AB of mass M and length l is Gravitational field at the centre of a semicircle formed by a thin wire AB of mass M and length l is September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 10 - [...]