Kinematics — Physics STD 11 — Question

The magnitude of the vector is –

A body of mass m is thrown vertically upward with a velocity v. The height at which the kinetic energy of the body is one third of its initial value is given by

The sum of moments of masses of all the particles in a system about the center of mass is-

Motion of a coin on a carrom board is an example of –

A train moving at a speed of 220 m/s towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is

The product of torque acting on a body and angular velocity is –

In a vernier caliper, n divisions of vernier scale coincides with (n – 1) divisions of main scale. The least count of the instrument is ………

1 radian is ……

The pressure of a gas contained in a closed vessel is increased by 0.4% when heated by 1°C. The initial temperature was