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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
- The value of coefficient of volume expansion of glycerin is 5 x 10⁻⁴ k⁻¹.
- A metal conductor of length 1m rotates vertically about one of its ends at angular
- A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle
- Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
- A particle moves in a straight line with a constant acceleration
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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