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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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- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
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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
- For non-conductors, the energy gap is
- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
- In circular coil, when number of turns is doubled and resistance becomes 1/4th
- A uniform rod of length l is placed with one end in contact with the horizontal
- An iron rod of volume 10⁻⁴ m³ and relative permeability 1000 is placed inside a long
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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