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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In electromagnetic spectrum, the frequencies of γ-rays and x-rays and ultraviolet rays
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
- The cylindrical tube of a spray pump has radius R, one end of which has n fine holes,
- A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω
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Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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