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Class 12 NEET Physics Dual Nature of Matter and Radiation
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Question : 49
Total: 104
When monochromatic radiation of intensity / falls on a metal surface, the number of photoelectrons and their maximum kinetic energy are N and T respectively. If the intensity of radiation is 21, the number of emitted electrons and their maximum kinetic energy are respectively
(2010 Mains)
N and 2T
2N and T
2N and 2T
N and T
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Solution:
The number of photoelectrons ejected is directly proportional to the intensity of incident light. Maximum kinetic energy is independent of intensity of incident light but depends upon the frequency of light. Hence, option (b) is correct.
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