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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Wb/m² is equal to
- When an electron beam passes through an electric field they gain kinetic energy.
- A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof
- In Young’s double slit experiment, the intensity of light coming from the first slit
- A charged particle (charge q) is moving in a circle of radius R with uniform speed v
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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