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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
- Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons
- If by mistake voltmeter is connected in series and ammeter in parallel then
- Two identical capacitors each of capacitance 5 mF are charged potentials 2 kV and 1 kV
- A man weighing 60 kg climbs a staircase carrying a 20 kg load on his hand
- Two resistors of resistances 2Ω and 6Ω are connected in parallel.
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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