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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 bomb of mass 30 kg at rest exploded into two pieces of masses 18 kg
- If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept
- The most important characteristic of electron in the production of X-rays is
- In an a.c circuit the e.m.f. (e) and the current (i) at any instant are given
- A solid cylinder of mass 50kg and radius 0.5 m is, free to rotate about the horizontal axis
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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