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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 Carnot engine takes heat from a reservoir at 627⁰C and rejects heat
- In Young’s double slit experiment, the wavelength of the light used is doubled
- A long horizontal rod has a bead which can slide long its length
- A thin glass(refractive index 1.5) lens has optical power of -5D in air.
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
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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