⇦ | ⇨ |
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 coil of 40 henry inductance is connected in series with a resistance of 8 ohm
- Potential at a point x-distance from the centre inside the conducting sphere
- Two waves are represented by the equations y₁ = a sin (?t + kx + 0.57) m
- Which series of hydrogen spectrum corresponds to ultraviolet region?
- Which of the following combinations should be selected for better tuning of an L-C-R
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A coil of 40 henry inductance is connected in series with a resistance of 8 ohm
- Potential at a point x-distance from the centre inside the conducting sphere
- Two waves are represented by the equations y₁ = a sin (?t + kx + 0.57) m
- Which series of hydrogen spectrum corresponds to ultraviolet region?
- Which of the following combinations should be selected for better tuning of an L-C-R
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