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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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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now
- Thomson coefficient of a conductor is 10 µV/K. Its two ends are kept
- A particle is dropped vertically from rest, from a height.The time taken by it to fall
- A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless
- A force of 10 newton acts on a body of mass 20 kg for 10 seconds. Change in its momentum
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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