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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.
Related Questions: - Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- The reddish appearance of the sun at sunrise and sunset is due to
- A parallel beam of fast moving electrons is incident normally on a narrow slit.
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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
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- The reddish appearance of the sun at sunrise and sunset is due to
- A parallel beam of fast moving electrons is incident normally on a narrow slit.
- A wire of length L metre carrying a current I ampere is bent in the form
- The device can act as a complete electronic circuit 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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