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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When you move from equator to pole, the value of acceleration due to gravity (g)
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- A black body is heated from 27° C to 127° C. The ratio of their energies of radiations
- When a metallic surface is illuminated with radiation of wavelength λ,
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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