Dual Nature of ...

The magnitude of saturation photoelectric current depends upon

The number of photons of wavelength 540 nm emitted per second by an electric bulb of power 100 W is (taking h =6 ×10^–34 J-s)

A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed 1/2 m away, the number of electrons emitted by photo cathode would

Two identical metal plates show photoelectric effect by a light of wavelength λ_A falling on plate A and λ_B on plate B (λ_A =2λ_B). The maximum kinetic energy is

The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function of the metal is approximately

When ultraviolet rays are incident on metal plate, then photoelectric effect does not occur. It occurs by the incidence of

A photosensitive metallic surface has work function hv₀. If photons of energy 2hv₀ fall on this surface the electrons come out with a maximum velocity of4 × 10⁶ m/s. When the photon energy is increases to5hv0 then maximum velocity of photo electron will be

Which of the following shows particle nature of light?

Light of wavelength 1824 Å, incident on the surface of a metal, produces photo-electrons with maximum energy 5.3 eV. When light of wavelength 1216 Å is used, the maximum energy of photoelectrons is 8.7 eV. The work function of the metal surface is

If the energy of a photon corresponding to a wavelength of 6000 Å is 3.32 × 10^–19 J, the photon energy for a wavelength of 4000 Å will be