If the frequency of the incident radiation on the cathode of a photocell is doubled ,how will the following change:
kinetic energy of the elecrons,

If the frequency of incident radiations is equal to the thresold frequency, what will be the value of stopping potential?

If the intensity of incident radiations in a photocell is increased, how does the stopping potential vary?

If the speed of the body is halved. What is the change in kinetic energy?

If mass is doubled and velocity is halved then new kinetic energy is

A parallel plate capacitor is charged to a potential difference V by a d.c. source. The capacitor is then disconnected from the source. If the distance between the plates is doubled, state with reason how the following will change. energy stored in the capacitor.

If the wavelength of incident light on a concave mirror and convex lens is increased, how will the focal length of each of these change?

To double the translational kinetic energy of the molecules of a gas one has to: