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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
- Three masses are placed on the x-axis : 300 g at origin, 500 g at x = 40 cm
- The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.
- The frequency of fundamental tone in an open organ pipe of length
- In a LCR series circuit, the potential difference between the terminals of the inductor
- A body oscillates with amplitude of 10 cm in a horizontal platform.
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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