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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- A source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity
- A boat is sent across a river with a velocity of 8 km/h.If the resultant velocity
- Two satellites of earth, S₁ and S₂ are moving in the same orbit. The mass of S₁
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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