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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
- The angle between the vectors (i+j) and (j+k) is
- If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
- A solid body rotates about a stationary axis, so that its angular velocity
- The power obtained in a reactor using U²³⁵ disintegration is 1000 kW
- White light reflected from a soap film (Refractive Index =1.5) has a maxima
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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