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A photoelectric surface is illuminated successively by monochromatic light of wavelength λ and λ/2. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material is (h=Planck’s constant, c=speed of light)
Options
(a) 2hc/λ
(b) hc/3λ
(c) hc/2λ
(d) hc/λ
Correct Answer:
hc/2λ
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
- Power dissipated in an LCR series circuit connected to an a.c source of emf ? is
- The input characteristics of a transistor in CE mode is the graph obtained by plotting
- Two coherent monochromatic beams of intensities I and 4I respectively, are superposed.
- If two vectors 2i+3j+k and -4i-6j-λk are parallel to each other, then the value of λ is
- A charged particle (charge q) is moving in a circle of radius R with uniform speed v
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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