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प्रश्न
Every metal has a definite work function. Why do all photoelectrons not come out with the same energy if incident radiation is monochromatic? Why is there an energy distribution of photoelectrons?
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उत्तर
The work function of a metal is the minimum energy required for a conduction electron to get out of the metal surface. All the electrons in an atom do not have the same energy level. When a ray having some photon energy is incident on a metal surface, the electrons come out from different levels with different energies. Hence, these emitted electrons show different energy distributions.
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संबंधित प्रश्न
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(d) electric charge of the photoelectrons is quantised
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What type of tube contains the plates in the experimental arrangement?
Which part collects electrons emitted from the metal surface?
What does emitter plate C do when light falls on it?
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Why is the polarity reversed during the procedure?
How quickly does photoelectric emission occur when suitable radiation falls on the metal surface?
Which observation was one of the major difficulties for classical wave theory?
