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If the wavelength of the first line of t...

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

A

13122 Å

B

`3280 Å`

C

`4860 Å`

D

`2187 Å`

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The correct Answer is:
C
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