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The threshold wavelength for photoelectric emission from a material is 4800 Å. Photoelectrons will be emitted from the material, when it is illuminated with light from a
Options
(a) 40 W blue lamp
(b) 40 W green lamp
(c) 100 W red lamp
(d) 100 W yellow lamp
Correct Answer:
40 W blue lamp
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
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Electrons in a certain energy level n=n₁, can emit 3 spectral lines. When they
- A current is flowing through resistance. A potential difference of 120 V
- The minimum number of NAND gates used to construct an OR gate is
- A plank with a box on it at one end is gradually raised about the other end.
- If α (current gain) of transistor is 0.98, then what is the value of β
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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