STANDARDPhysics-Atomic Structure

STANDARD Physics Hydrogen Spectrum MCQ Question

Type: MCQ-numerical-Medium-Class 11

If the wavelength of the first line of the Balmer series of hydrogen is 6561 Å, the wavelength of the second line of the series should be

A

13122 Å

B

3280 Å

C

4860 Å

D

2187 Å

Correct Answer

Option C

Detailed Explanation

For Balmer series, n₁ = 2, n₂ = 3 for 1st line and n₂ = 4 for second line. Using the formula for wavelength ratio, λ₂ = (20/27) × 6561 = 4860 Å.

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