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Photoelectric emision occurs only when the incident light has more than a certain minimum
Options
(a) power
(b) wavelength
(c) intensity
(d) frequency
Correct Answer:
frequency
Explanation:
For occurence of photoelectric effect, the incident light should have frequency more than a certain minimum which is called the threshold frequency (v₀).
We have, 1/2 mv² = hv – hv₀
for photoelecric effect emission v > v₀ where v is the frequency of the incident light.
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The term liquid crystal refers to a state that is intermediate between
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- The velocity of image when object and mirror both are moving towards each other
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- A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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