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When a piece of metal is illuminated by a monochromatic light of wavelength λ, then stopping potential is 3Vs. When same surface is illuminated by light of wavelength 2λ, then stopping potential becomes Vs. The value of threshold wavelength for photoelectric emission will be
Options
(a) (4λ)/3
(b) 6λ
(c) 4λ
(d) 8λ
Correct Answer:
4λ
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 wheel has angular acceleration of 3.0 rad/sec² and an initial angular speed
- If the earth shrink such that its mass does not change but radius decreases to one
- The drift velocity of the electrons in a copper wire of length 2 m under
- An electron in hydrogen atom makes a transition n₁ → n₂
- Two thin dielectric slabs of dielectric constants K₁ and K₂, (K₁ < K₂) are inserted
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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