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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
- If M (A; Z), Mₚ and Mₙ denote the masses of the nucleus AZ X, proton
- An alternating electric field, of frequency v, is applied across the dees (radius = R)
- If in an experiment for determination of velocity of sound by resonance tube
- The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
- If a body travels half the distance with velocity v1 and the next half with velocity v2
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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