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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 uniform force of (3i+j) Nacts on a particle of mass 2 kg.Hence the particle is displaced
- A body of length 1 m having cross-sectional area 0.75 m² has heat flow through it
- Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
- A perfect gas at 27° C is heated at constant pressure to 327° C. If original volume of gas
- The magnetic susceptibility of a material of a rod is 449. Permeability of vaccum
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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