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The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be
Options
(a) 5380 Å
(b) 2900 Å
(c) 2500 Å
(d) 2000 Å
Correct Answer:
5380 Å
Explanation:
Work function = W₀
Wavelength = λ₀ = 12375 eV Å/ 2.3 eV = 5380 Å
Therefore, λ₀ = 5380 Å
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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
- Core of electromagnets are made of ferromagnetic material which has
- The resultant of two forces, one double the other in magnitude, is perpendicular
- The velocity of a particle at an instant is 10 ms⁻¹ and after 5 s the velocity
- The depletion layer in the p-n junction region is caused by
- A layer of glycerine of thickness 1 mm present between a large surface area of 0.1 m².
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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