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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 satellite is revolving around the earth with a kinetic energy E. The minimum
- Two cells, having the same e.m.f. are connected in series through an external resistance
- The value of n so that vectors 2i+3j-2k, 5i+nj+k and -i+2j+3k may be coplanar,will be
- A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by
- Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity
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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