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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- An electron of a stationary hydrogen atom passes from the fifth energy level to
- A spherical drop of mercury having a potential of 2.5 v is obtained as a result
- A proton and an alpha particle both enter a region of uniform magnetic field B,
- A spring has time period T. It is cut into n equal parts. The time period of each part
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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