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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 wavelength of kα, X-rays produced by an X-ray tube 0.76Å. The atomic number
- Charge density for intrinsic semiconductor will be
- λ₁ and λ₂ are used to illuminate the slits. β₁ and β₂ are the corresponding fringe
- A force acts on a 3.0 g particle in such a way that the position of the particle
- A choke is preferred to a resistance for limiting current in AC circuit because
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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