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in Physics by (79.8k points)

Hydrogen atom in ground state is excited by a monochromatic radiation of λ = 975 A. Number of spectral lines in the resulting spectrum emitted will be

(a) 3

(b) 2

(c) 6

(d) 10

1 Answer

+1 vote
by (83.4k points)
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Best answer

The correct option is (c) 6.

Explanation:

After absorbing a photon of energy 12.75 eV the electron will reach to third excited state of energy -0.85 eV since energy difference corresponding to

n = 1 and n = 4 is 12.75 eV

Number of spectral lines emitted

by (15 points)
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