Q .     Hydrogen atom in its ground state is excited by means of monochromatic radiation of wavelength `975^o` Å. How many different lines are possible in the resulting spectrum? Also calculate the longest wavelength amongst them. Given: ionization energy for hydrogen atom `= 13.6` eV.

JEE 1982
A

`4, 2.162` µm

B

`4, 1.875` µm

C

`6, 2.162` µm

D

`6, 1.875` µm

HINT

Energy corresponding to given wavelength : `E` (in eV) `= 12375/(λ(i n oversetoA))`

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