| ⇦ | 
| ⇨ |
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 body of mass 1 kg is thrown upwards with a velocity 20 m/s. It momentarily
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
- If X=3YZ², find dimensions of Y if X and Z are the dimensions of capacity
- Sodium and copper have work function 2.3 eV and 4.5 eV respectively
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body of mass 1 kg is thrown upwards with a velocity 20 m/s. It momentarily
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
- If X=3YZ², find dimensions of Y if X and Z are the dimensions of capacity
- Sodium and copper have work function 2.3 eV and 4.5 eV respectively
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
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