| ⇦ | 
| ⇨ |
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: - A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- The dimensions of latent heat are
- When npn transistor is used as an amplifier
- The radius of the convex surface of a plano-convex lens is 20 cm and the refractive index
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- The dimensions of latent heat are
- When npn transistor is used as an amplifier
- The radius of the convex surface of a plano-convex lens is 20 cm and the refractive index
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
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.
Share this page with your friends
Leave a Reply