| ⇦ | 
| ⇨ |
When the wave of hydrogen atom comes from infinity into the first orbit, the value of wave number is
Options
(a) 109700 cm⁻¹
(b) 1097 cm⁻¹
(c) 109 cm⁻¹
(d) None of these
Correct Answer:
109700 cm⁻¹
Explanation:
Wave number = 109700 cm
ῡ = 1 / λ = R[(1/n₁²) – (1/n₂²)] = (R / n₁²) Because n₂ = ∞ and n₁ = 1
ῡ = 1.097 × 10⁷ m⁻¹ = 109700 cm⁻¹
Related Questions: - A simple pendulum oscillates in a vertical plane. When it passes through the mean
- If radius of earth’s orbit is made 1/4, the duration of a year will become
- Water flows through a pipe. The area of cross-section at one place A₁=10 cm²,
- An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
- A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A simple pendulum oscillates in a vertical plane. When it passes through the mean
- If radius of earth’s orbit is made 1/4, the duration of a year will become
- Water flows through a pipe. The area of cross-section at one place A₁=10 cm²,
- An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
- A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth
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