The ratio of longest wavelength and the shortest wavelength observed in the five spectral series of emission spectrum of hydrogen is

Options

A. `(4)/(3)`
B. `(525)/(376)`
C. 25
D. `(900)/(11)`

Answer

D

Explanation

`(1)/(lamda_(l))=R((1)/(5^(2))-(1)/(6^(2)))=R((36-25)/(25xx36))=(11R)/(900)`
`(1)/(lamda_(s))=R((1)/(1^(2))-(1)/(oo))=R`
`(ii)//(i) implies (lamda_(l))/(lamda_(s))=(900)/(11)`