| ⇦ | 
| ⇨ |
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: - Surface tension of a solution is 30 x 10⁻² N/m. The radius of the soap bubble is 5 cm
- The young’s modulus of steel is twice that of brass. Two wires of same length
- In a discharge tube ionization of enclosed gas is produced due to collisions between
- The order of radius of the nucleus of an atom is
- An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Surface tension of a solution is 30 x 10⁻² N/m. The radius of the soap bubble is 5 cm
- The young’s modulus of steel is twice that of brass. Two wires of same length
- In a discharge tube ionization of enclosed gas is produced due to collisions between
- The order of radius of the nucleus of an atom is
- An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
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