The ratio of wavelength of the lest line of Balmer series and the last line Lyman series is:

Options

A. 2
B. 1
C. 4
D. `0.5`

Answer

C

Explanation

Last line of Balmer series, `(1)/(lamda_(1)) prop ((1)/(oo^(2))- (1)/(2^(2))) = (-1)/(4)`
Last line of Lymen series, `(1)/(lamda_(2)) prop ((1)/(oo^(2))- (1)/(1^(2)))= (-1)/(1)`
`rArr (lamda_(1))/(lamda_(2))= 4`