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Emission and Absorption Spectra

How many spec...

Question

How many spectral lines are produced, when an electron jumps from n = 5 to ground state (n=1)?

A

10

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B

5

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C

26

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D

14

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Solution

The correct option is A 10
Number of spectral lines produced $\frac{n (n - 1)}{2} = \frac{5 (5 - 1)}{2} = \frac{5 \times 4}{2} = 10$

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