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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 transformer having efficiency of 90% is working on 200 V and 3kW power supply
- When there is no heat change from surroundings in a system, then the process
- The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum
- The horizontal component of earth’s magnetic field at a place is 3×10⁻⁴ T
- The primary and secondary coil of the transformer have 50 and 1500 turns respectively
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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