The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be

The Work Function Of Sodium Is 23 Ev The Threshold Physics Question

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:

  1. A potentiometer wire of length L and a resistance r are connected in series with
  2. The binding energy per nucleon of ₃⁷Li and ₂⁴He nuclei are 5.60 MeV and 7.06MeV
  3. Two coherent sources of different intensities send waves which interfere.
  4. A source is moving towards an observer with a speed of 20 m/s and having frequency
  5. If the self inductance of 500 turn coil is 125 mH, then the self inductance

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*