| ⇦ | 
| ⇨ |
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: - The dimensional formula for Young’s modulus is
- Carbon,silicon and germanium have four valence electrons each. At room temperature
- The magnetic flux linked with a coil at any instant t is given by ?, find emf
- If alternating source of primary coil on transformer is replaced by a Laclanche cell
- The ultimate individual unit of magnetism in any magnet is called
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The dimensional formula for Young’s modulus is
- Carbon,silicon and germanium have four valence electrons each. At room temperature
- The magnetic flux linked with a coil at any instant t is given by ?, find emf
- If alternating source of primary coil on transformer is replaced by a Laclanche cell
- The ultimate individual unit of magnetism in any magnet is called
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