Units and Measurements — Physics STD 11 Science — Question

In inelastic collision,

A typical thermistor can easily measure a change in temperature of the order of

The drift velocity of free electrons in a conductor is vd, when the current is flowing in it. If both the radius and current are doubled, the drift velocity will be

The wavelength of sound in air is 1.5 m and that in liquid is 2 m. If the velocity of sound in air is 330 m/s, the velocity of sound in liquid is

The ratio of relative velocity of separation after collision to the relative velocity of approach before collision between two colliding bodies is _____________ .

A train is moving towards east and a car is moving along north, both with same speed. The observed direction of car to the passenger in the train is

A block of mass m moving at a speed of u collides with another block of mass 2m at rest. The lighter block comes to rest after the collision. The coefficient of restitution is

Two particles are simultaneously projected in the horizontal direction from a point Pat a certain height. The initial velocities of the particles are oppositely directed to each other and have magnitude v each. The separation between the particles at a time when their position vectors (drawn from the point P) are mutually perpendicular, is

How does the escape velocity of a particle depend on its mass?