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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
- Two solid discs of radii r and 2r roll from the top of an inclined plane
- The direction of magnetic line of force of a bar magnet is
- A balloon with mass m is descending down with an acceleration a
- When the rate of flow of charge through a metallic conductor
- Reactance of a capacitor of capacitance C µF for A.C freqency (400 / π) Hz is 25 ohm
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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