CBSE Class 12-science Answered
Define the following terms for a given photosensitive surface :
i. Thershold frequency, and
ii. Work function.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(i) For a given photosensitive material, there exists a certain minimum frequency of the incident radiation below which no emission of photoelectrons takes place. This frequency is called threshold frequency.
(ii) Work function of a metal is the minimum energy required by an electron to just escape from the metal surface.
(ii) Work function of a metal is the minimum energy required by an electron to just escape from the metal surface.
Answered by | 04 Jun, 2014, 03:23: PM
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