| ⇦ | 
| ⇨ |
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: - If A=3i+4j and B=7i+24j the vector having the same magnitude as B and parallel to A is
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- when a magnetic field is applied on a stationary electron, then it
- A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
- Heat is not being exchanged in a body. If its internal energy is increased, then
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If A=3i+4j and B=7i+24j the vector having the same magnitude as B and parallel to A is
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- when a magnetic field is applied on a stationary electron, then it
- A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
- Heat is not being exchanged in a body. If its internal energy is increased, then
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