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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 sodium nucleus ₁₁Na²³ contains
- Two charges placed in air repel each other by a force of 10⁻⁴ N. When oil is
- The time period of a mass suspended from a spring is T. If the spring is cut into four
- In a diffraction pattern due to a singleslit of width a, the first minimum is observed
- When 10¹⁹elecrons are removed from a neutral metal plate through some process,
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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