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Photons of wavelength 248 nm falls on a metal surface whose work function is 2.2 eV. Assume thru each photoelectron inside the metal lattice may come out of the surface or collide Photons of wavelength 248 nm falls on a metal surface whose work function is 2.2 eV. Assume thru each photoelectron inside the metal [...]

Threshold wavelength of certain metal is lemda 0. A radiation of wavelength lemda < lemda 0 is incident on the plate. Then, choose the correct statement from the following. choose the correct statement from the following. Threshold wavelength of certain metal is lemda 0. A radiation of wavelength lemda < lemda 0 is incident on [...]

When photons of energy hc/lemda fall on a metal surface, photoelectrons are ejected form it. If the work function of the surface is hv0, then photoelectrons are ejected form it. If the work function of the surface is hv0 then When photons of energy hc/lemda fall on a metal surface October 14, 2020 Category: Uncategorised [...]

In a photoelectric experiment, the wavelength of the incident light is decreased from 6000 A to 4000 A. While the intensity of radiations remains the same, In a photoelectric experiment the wavelength of the incident light is decreased from 6000 A to 4000 A. While the intensity of radiations remains the same October 14, 2020 [...]

Photelectric effect supports the quantum nature of light because (1) there is minimum frequency of light below which no photoelectrons are emitted (2) the maximum KE of photoelectrons Photelectric effect supports the quantum nature of light because (1) there is minimum frequency of light below which no photoelectrons are emitted (2) the maximum KE of [...]

The light sensitive compound on most photographic films is silver bromide AgBr. A film is exposed when the light energy absorbed dissociates their molecule into its atoms. The energy The light sensitive compound on most photographic films is silver bromide AgBr. A film is exposed when the light energy absorbed dissociates their molecule into its [...]

The human eye is most sensitive to green light of wavelength 505 nm. Experiments have found that when people are kept in a dark room until their eyes adapt to the darkness, a single photon a single photon The human eye is most sensitive to green light of wavelength 505 nm. Experiments have found that [...]

Radiation of wavelength 546 nm falls on a photo cathode and electrons with maximum kinetic energy of 0.18 eV are emitted. When radiation of wavelength 185 nm falls on the same surface, Radiation of wavelength 546 nm falls on a photo cathode and electrons with maximum kinetic energy of 0.18 eV are emitted. When radiation [...]

The radius of the second orbit of an electron in hydrogen atom is 2.116 A. The de Broglie wavelength associated with this electron in this orbit would be The radius of the second orbit of an electron in hydrogen atom is 2.116 A. The de Broglie wavelength associated with this electron in this orbit would [...]

A particle of mass 3m at rest decays into two particles of masses m and 2m having non-zero velocities. The ratio of the de Broglie wavelengths of the particles (lemda 1 / lemda 2) is A particle of mass 3m at rest decays into two particles of masses m and 2m having non-zero velocities. The [...]