Which of the following is dependent on the intensity of incident radiation in a photoelectric experiment
Work function of the surface
Amount of photoelectric current
Stopping potential will be reduced
Maximum kinetic energy of photoelectrons
In photoelectric effect, the K.E. of electrons emitted from the metal surface depends upon
The work function of a substance is $3.0\ \mathrm{eV}$. The longest wavelength of light that can cause the emission of photoelectrons from this substance is approximately:
The curve drawn between velocity and frequency of photon in vacuum will be a
The energy of a photon of light of wavelength $450 nm$ is
A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of $24\,W$ The radius of curvature of hemisphere is $10\,cm$ and the inner surface is completely reflecting. The force on the hemisphere due to the light falling on it is $..........\times 10^{-8}\,N$.