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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
Related Questions: - Consider a compound slab consisting of two different materials having equal thickness
- The unit of permitivity of free space, ε₀ is
- When a metallic surface is illuminated with radiation of wavelength λ,
- The sun light reaches us as white and not as its components because
- A ship A is moving westwards with a speed of 10 km/h and a ship B 100 km
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Consider a compound slab consisting of two different materials having equal thickness
- The unit of permitivity of free space, ε₀ is
- When a metallic surface is illuminated with radiation of wavelength λ,
- The sun light reaches us as white and not as its components because
- A ship A is moving westwards with a speed of 10 km/h and a ship B 100 km
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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