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If the frequency of light incident on a metallic plate be doubled, how will the maximum kinetic energy of the photoelectrons change?
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Important Questions on Dual Nature of Radiation and Matter
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The photoelectric threshold for a certain metal surface is What is the maximum kinetic energy of the photoelectrons emitted, if radiations of wavelength are used?
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In photoelectric effect when photons of energy fall on a photosensitive surface (work function ) electrons are emitted from the metallic surface. It is possible to say that
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Light of frequency times the threshold frequency is incident on a photosensitive material.If the frequency is halved and intensity is doubled, the photoelectric current becomes
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The work function of a substance is . The longest wavelength of light that can cause photoelectron emission from this substance is approximately
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The cathode of a photocell is changed such that the work function changes from to If the saturation currents before and after the change are and and all other conditions are unchanged, then (assuming )
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If the energy of a photon is then its momentum is ( is velocity of light)
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The de Broglie wavelength of an electron in the Bohr orbit is related to the radius of the orbit as
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A photon and an electron both have wavelength The ratio of energy of photon to that of electron is
