| ⇦ | 
| ⇨ |
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: - Which of the following is true for elastic potential energy density?
- When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
- A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following is true for elastic potential energy density?
- When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
- A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply