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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.
Related Questions: - An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
- Two charges of equal magnitude q are placed in air at a distance 2a
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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
- An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
- Two charges of equal magnitude q are placed in air at a distance 2a
- Two poles of same strength attract each other with a force of magnitude F
- The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain
- A and B are two metals with threshold frequencies 1.8 x 10¹⁴ Hz and 2.2 x 10¹⁴ Hz.
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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