When light of wavelengths `lambda and 2 lambda` are incident on a metal surface, the stopping potentials are `V_(0) and V_(0)`/4 respectively. If c be the velocity of light in air, find the threshold frequency of photoelectric emission.

When light of wavelength lamda and 2 lamda are incident on a metal surface, the stopping potentials are V_(0) and V_(0)//4 respectively. If c be the velocity of light in air, find the threshold frequency of photoelectric emission.

For two monochromatic radiations incident on the same metal surface, the stopping potentials are 1.0 V and 2.0 V. The ratio between the maximum velocities, of the emitted photoelectrons is

When a certain metalic surface is illuminated with monochromatic light of wavelength lamda the stopping potential is V_0 When the same surface is illuminated with light of wavelength 2lambda , the stopping potential frac(V_0)(4) ./ If the velocity of light in air is C, then find threshold frequency. Write down de Brogile hypotesis.

For a monochromatic radiation incident on a metal surface, the stopping potential is 2.0V. Find out the maximum velocity of the emitted photoelectrons.

For a monochromatic light incident on a metal surface, the stopping potential is V. Then the kinetic energy of the fastest photoelectrons emitted from that surface is

The threshold frequency of photoelectric effect of a metal surface is f_(0) . The stopping potentials are V_(0) and nV_(0) when the frequencies of incident light are 2f_(0) and 4f_(0) . What is the value of n ?

The stopping potential of copper is 2.72V for light of wavelength 1849 Å . Determine the work function and threshold frequency of the metal.

When radiation of wavelength lamda is incidenton a metallic surface, the stopping potential is 4.8V. If the same surface is illuminated with radiation of double the wavelength, the stopping potential becomes 1.6V. What is the threshold wavelength for the surface?

Monochromatic light of wavelength 589 nm is incident on a water surface from air the wavelength, frequency and speed of (a) reflected and

When a certain metal surface is illuminated with light of frequency v, the stopping potential for photoelectric current is V_(0) . When the same surface is illuminated by light of frequency (v)/(2) the stopping potent (V_(0))/(4) . The threshold frequency for photoelectric emission is