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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
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Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- The acceleration due to gravity near the surface of a planet of radius R and density d
- In a n-type semiconductor, which of the following statement is true?
- An object of mass 3kg is at rest. Now a force F=6t² i⃗+4t j⃗ is applied on the object
- If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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