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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
- The wavelength of X-rays is in the range
- A cyclist is riding with a spped of 27 km/h.As he approaches a circular turn
- A photon of energy 10.2 eV collide inelastically with hydrogen atom in ground state
- Radii of curvature of a converging lens are in the rato 1:2. Its focal length
- A copper disc of radius 0.1 m is rotated about its centre, with 10 revolutions
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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