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Photoelectric Emission

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If the wavelength of light in an experiment on photoelectric effect is doubled, (i) the photoelectric emission will not take place (ii) the photoelectric emission may or may not take place (iii) the stopping potential will increase (iv) the stopping potential will decrease

Assertion : In the process of photoelectric emission , all the emitted photoelectrons have the same kinetic energy. Reason : The photon transfers its whole energy to the electron of the atom in photoelectric effect.

represents a graph of most energetic photoelectrons K_(max) (in eV) and frequency v for a metal used as cathod in photoelectrons experiment. The threshold frequency of light for the photoelectric emission from the metal is

Light strikes a sodium surface, causing photoelectric emission. The stopping potential for the ejected electrons is 5.0 V, and the work function of sodium is 2.2 eV. What is the wavelength of the incident light?

For photoelectric emission from certain metal the cut - off frequency is v . If radiation of frequency 2 v impinges on the metal plate , the maximum possible velocity of the emitted electron will be ( m is the electron mass).

A certain element 'A' undergoes photoelectric emission when bombarded by one photon of indigo light. When the material containing the same element was bombarded by two photons of red light with a total of same energy as that of indigo photon, no electron was emitted. Explain.