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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
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Force required to move a mass of 1kg at rest on a horizontal rough plane
- The self induced e.m.f. in a 0.1 H coil when the current in it is changing
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- A ship A is moving westwards with a speed of 10 km/h and a ship B 100 km
- SI unit of permittivity is
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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