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1900's Physics and Wave

The transitio...

Question

The transition of electron occurs in $H$ -atom from $6^{t h}$ to $3^{r d}$ orbit. The number of spectral lines given are :

A

4

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B

5

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C

7

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D

6

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Solution

The correct option is D 6
Total number of lines in the spectrum $\frac{(n_{2} - n_{1}) (n_{2} - n_{1} + 1)}{2} =$ $\frac{(6 - 3) (6 - 3 + 1)}{2} = 6$ .

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