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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
- A tuned amplifier circuit is used to generate a carrier frequency of 2 MHz
- Which of the following statement about scalar quantity is true?
- Efficiency of a Carnot engine is 50% when temperature of sink is 500K. In order
- At what height h above earth, the value of g becomes g/2 (where R=radius of earth)?
- The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain
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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