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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
- The work function of metals is in the range of 2 eV to 5 eV.
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
- A spherical drop of capacitance 1μF is broken into eight drops of equal radius.
- In common base circuit of a transistor, current amplification factor is 0.95.
- The most important characteristic of electron in the production of X-rays is
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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