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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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(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The energy released in the fission of 1 kg of ₉₂U²³⁵ is (energy per fission = 200 MeV)
- On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck
- The self induced e.m.f. in a 0.1 H coil when the current in it is changing
- Two identical charges repel each other with a force equal to 10 mgwt they are 0.6 m
- Source S₁ is producing, 10¹⁵ photons per second of wavelength 5000Å
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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