Dual Nature Of Radiation And Matter Ques 52
52. When ultraviolet radiation is incident on a surface, no photoelectrons are emitted. If a second beam causes photoelectrons to be ejected, it may consists of
[2002]
(a) infra-red waves
(b) $X$-rays
(c) visible light rays
(d) radio waves
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Answer:
Correct Answer: 52.(b)
Solution:
- (b) Energy of photon of $X$-rays is more than energy of photon of ultraviolet rays. Because frequency of $X$ rays is more than ultraviolet rays.
BETA
