Given the value of Rydberg constant is 1...

Given the value of Rydberg constant is `10^7``m^-1`, the wave number of the last line of the Balmer series in hydrogen spectrum will be:

`2.5xx10^7 m^(-1)`

`0.025xx10^4m^(-1)`

`0.5xx10^7m^(-1)`

`0.25xx10^7m^(-1)`

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