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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
- Two sound waves of wavelengths 5m and 6m formed 30 beats in 3 seconds
- If a magnetic substance is brought near the north or the south pole of a bar magnet
- The acceleration due to gravity at a place is π² m/sec². Then the time period
- Two lenses of power 15 D and -3 D are placed in contact.
- A ball is dropped from a height of 20 cm. Ball rebounds to a height of 10cm
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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