Dual Nature of Radiation and Matter - Result Question 33
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35. Photoelectric emmision occurs only when the incident light has more than a certain minimum
======= ####35. Photoelectric emmision occurs only when the incident light has more than a certain minimum
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/dual-nature-of-radiation-and-matter/dual-nature-of-radiation-and-matter—result-question-33.md (a) power
(c) intensity
(b) wavelength
(d) frequency
[2011]
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Answer:
Correct Answer: 35. (d)
Solution:
- (d) For occurence of photoelectric effect, the incident light should have frequency more than a certain minimum which is called the threshold frequency $(v_0)$.
We have, $\frac{1}{2} mv^{2}=h v-h v_0$
For photoelectric effect emission $n>n_0$ where $n$ is the frequency of the incident light.
