| ⇦ | 
| ⇨ |
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: - A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
- A beam of light of λ=600 nm from a distant source falls on a single slit 1 mm wide
- The resultant of two forces, one double the other in magnitude, is perpendicular
- The ratio of specific heats Cp/Cv=γ in terms of degrees of freedom (n) is given by
- when a magnetic field is applied on a stationary electron, then it
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A beam of cathode rays is subjected to crossed Electric (E) and Magnetic fields (B)
- A beam of light of λ=600 nm from a distant source falls on a single slit 1 mm wide
- The resultant of two forces, one double the other in magnitude, is perpendicular
- The ratio of specific heats Cp/Cv=γ in terms of degrees of freedom (n) is given by
- when a magnetic field is applied on a stationary electron, then it
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