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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 (a) infra-red waves (b) X-rays (c) visible light rays (d) radio waves



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


(a)    infra-red waves


(b)    X-rays


(c)    visible light rays


(d)    radio waves


Grade:upto college level

1 Answers

Navjyot Kalra
askIITians Faculty 654 Points
8 years ago

(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.

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