Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å

Hydrogen Atom In Ground State Is Excited By A Monochrmatic Physics Question

Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å. Number of spectral lines in the resulting spectrum emitted will be

Options

(a) 3
(b) 2
(c) 6
(d) 10

Correct Answer:

6

Explanation:

For the λ=975 Å
1 / λ = R [(1/n₁²) – (1/n₂²)]
where R is the Rydberg constant
Solving we get n₂ = n = 4 (Since, n₁ = 1 ground state)
Therefore number of spectral lines = n(n – 1) / 2 = 4(4 – 1) / 2 = 6.

Related Questions:

  1. A 36 Ω galvanometer is shunted by resistance of 4 Ω. The percentage of the total current
  2. Two identical cells of the same e.m.f. and same internal resistance
  3. The barrier potential of a p-n junction depends on
  4. The ratio of the weight of a man in a stationary lift and when it is moving downwards
  5. Two racing cars of masses m₁ and m₂ are moving in circles of radii

Topics: Atoms and Nuclei (136)
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Your email address will not be published.


*