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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
- When we hear a sound, we can identify its source from
- In the series resonance the value of impedence is 3 Ω and the resistance is 4Ω,
- The magnetic field in a certain region of space is given by B =8.35×10⁻² Î T.
- A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
- An unpolarised beam of intensity I is incident on a pair of nicols making an angle
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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