Physics Test - ...

A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration a_c is varying with time t as a_c=k² rt², where k is a constant. The power delivered to the particle by the force acting on it is

A conducting wire frame is placed in a magnetic field, which is directed into the paper, figure. The magnetic field is increasing at a constant rate. The directions of induced current in wires AB and CD are

An artificial satellite is moving in a circular orbit around the earth with a speed equal to half the magnitude of escape velocity from the earth. The height of satellite above the surface of earth is -(where R=radius of earth)

A ball of mass m₁ is moving with velocity 3v. It collides head on elastically with a stationary ball of mass m₂. The velocity of both the balls become v after collision. Then the value of the ratio$\frac{m_2}{m_1}$ is

The ratio of work done by an ideal monoatomic gas to the heat supplied to it in an isobaric process is

Figure shows a smooth inclined plane of inclination θ fixed in a car. A sphere is set in pure rolling on the incline. For what value of 'a' (the acceleration of car in horizontal direction) the sphere will continue pure rolling?

While using travelling microscope in an experiment one find that one main scale division length is 1 mm and 10 VSD = 9 MSD. When this microscope is focused over a glass slab which is placed over a spot. Then which of the reading is correctly written -

Two bodies of masses 10 kg and 100 kg are separated by a distance of 2 m. The gravitational potential at the mid-point of the line joining the two bodies is:

A particle moves along x-axis as x=4(t−2)+a(t−2)². Which of the following is true?

A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over one edge of the table is