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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
- If the series limit of Lyman series for hydrogen atom is equal to the series limit
- When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm
- A spherical drop of mercury having a potential of 2.5 v is obtained as a result
- A coil of resistance 20 ohm and inductance 5H is connected with a 100V battery
- Let A = i Acosθ +j B sinθ be any vector.Another vector B which is normal to A is
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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