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Solution - 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? - CBSE (Commerce) Class 12 - Physics

ConceptExperimental Study of Photoelectric Effect

Question

Answer the following questions:

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?

Solution

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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APPEARS IN

 NCERT Physics Textbook for Class 12 Part 2 (with solutions)
Chapter 11: Dual Nature of Radiation and Matter
Q: 37.4 | Page no. 411

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Reference Material

Solution for question: 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? concept: null - Experimental Study of Photoelectric Effect. For the courses CBSE (Commerce), CBSE (Arts), CBSE (Science)
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