Transition between three energy energy levels in a particular atom give rise to three Spectral line of wevelength , in increasing magnitudes. `lambda_(1), lambda_(2)` and `lambda_(3)`. Which one of the following equations correctly ralates `lambda_(1), lambda_(2)` and `lambda_(3)`?
`lambda_(1)=lambda_(2)-lambda_(3)`
`lambda_(1)=lambda_(3)-lambda_(2)`
`(1)/(lambda_(1))=(1)/(lambda_(2))+(1)/(lambda_(3))`
`(1)/(lambda_(2))=(1)/(lambda_(3))+(1)/(lambda_(1))`

Options

A. `lambda_(1) = lambda_(2) - lambda_(3)`
B. `lambda_(1) = lambda_(3) - lambda_(2)`
C. `(1)/(lambda_(1) ) = (1)/(lambda_(2)) + (1)/(lambda_(3))`
D. `(1)/(lambda_(1)) = (1)/(lambda_(3)) + (1)/(lambda_(2))`

Answer

C