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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: - According to photon theory of light which of the following physical quantities,
- Two bulbs 60 W and 100 W designed for voltage 220 V are connected in series
- Graph of force per unit length between two long parallel current carrying
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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
- According to photon theory of light which of the following physical quantities,
- Two bulbs 60 W and 100 W designed for voltage 220 V are connected in series
- Graph of force per unit length between two long parallel current carrying
- A glass flask weighing 390 g having internal volume 500 cc just floats
- A bullet of mass 0.05 kg moving with a speed of 80 m/s enters a wooden
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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