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When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminating with radiation of wavelength 2λ, the stopping potential is V/4. The threshold wavelength for the metallic surface is
Options
(a) 5λ
(b) 5/2 λ
(c) 3λ
(d) 4λ
Correct Answer:
3λ
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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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
- A proton of mass m and charge q is moving in a plane with kinetic energy E. If there exists
- The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is
- The number of photons of wavelength of 540 nm emitted per second by an electric bulb
- If in a L-R series circuit the power factor is 1/2 and R=100Ω, then the value of L is,
- The velocity of sound is V, in air. If the density of air is increased to four times
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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