PART - 1 CH - 5Work, Energy and Power — Physics STD 11 Science — Question

A person is standing still on frictionless ice in the middle of a frozen pond, how will be reach the shore?

How does the viscosity of gases depend upon temperature?

Read each statement below carefully and state, with reasons, if it is true or false: The net acceleration of a particle in circular motion is always along the radius of the circle towards the centre.

What is the source of kinetic energy of the bullet coming out of the bullet of a rifle?

Define uniformly accelerated motion.

Which of the following examples represent (nearly) simple harmonic motion and which represent periodic but not simple harmonic motion? Motion of a ball bearing inside a smooth curved bowl, when released from a point slightly above the lower most point.

Is strong nuclear force, charge dependent?

Find the efficiency of the Carnot engine working between boiling point and freezing point of water.

How will the time period of a simple pendulum change when its length is doubled?

A wire is stretched by a certain amount under a load. If the load and radius both are increased to four times, find the stretch caused in the wire.