1.

When electrons are de-exciting from nth orbit of hydrogen atoms to ground state, 15 spectral lines are formed. The shortest wavelength among these will beA. `11/900R`B. `36/(35R)`C. `35/36R`D. `35/(36R)`

Answer» Correct Answer - B
`(n(n-1))/2=15 rArr n=6`
`1/(lambda)=Rxx1^(2)[1/(1^(2))-1/(6^(2))]=Rxx35/36`
`lambda=36/(35R)`


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