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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 potentiometer wire is 100cm long and a constant potential difference is maintained
- If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is
- A charged particle enters a uniform magnetic field with a certain speed at right angles
- Masses of 3 wires of same metal are in the ratio 1:2:3 and their lengths
- A wire elongates by l mm when a load W is hanged from it. If the wire goes over
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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