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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- α-particles, deuterons and protons of same energy are moving in a perpendicular
- A boy standing at the top of a tower of 20m height drops a stone
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
- Two coherent sources of different intensities send waves which interfere.
- If M (A; Z), Mₚ and Mₙ denote the masses of the nucleus AZ X, proton
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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