Dual Nature of Radiation and Matter - Result Question 67
71. Number of ejected photoelectron increases with increase
(a) in intensity of light
[1993]
(b) in wavelength of light
(c) in frequency of light
(d) never
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Answer:
Correct Answer: 71. (a)
Solution:
- (a) Photoelectric current is directly proportional to the intensity of incident light.
Kinetic energy of emitted photoelectrons varies with frequency of incident radiation and it does not depend upon the intensity of incident radiations. But, the number of photons emitted from the surface varies directly with intensity of incident light.
