Home
Class 12
PHYSICS
The ration of minimum wavelengths of Lym...

The ration of minimum wavelengths of Lyman and Balmer series will be

A

1.25

B

0.25

C

5

D

10

Text Solution

Verified by Experts

The correct Answer is:
B
The wavelength of Lyman series is given by
`(1)/(lambda)=R[(1)/(l^(2))-(1)/(n^(2))]`
Where n=2,3,4,…………
For minimum wavelength,`n=oo`
`therefore (1)/((lambda_(min))_(Lyman))=(R)/(1)` .........(i)
The wavelength of Balmer series is given by
`(1)/(lambda)=R[(1)/(2^(2))-(1)/(n^(2))]`
Where n=3,4,5.........
For minimum wavelength ,`n=oo`
`therefore(1)/((lambda_(min))_(Balmer))=(R)/(4)`............(ii)
Divide (ii)by (i),we get
`((lambda_(min))_(Lyman))/(lambda_(min))_(Balmer)=(1)/(4)=0.25`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SOLVED PAPER 04

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

The ratio of minimum wavelength of Lyman and Balmer series will be

If lambda_1 and lambda_2 are the maximum wavelength limits of Lyman and Balmer sereis of H_2 atom, lambda_1//lambda_2 will be

Knowledge Check

  • The ratio of minimum wavelengths of Lyman and Balmer series will be

    A
    1.25
    B
    0.25
    C
    5
    D
    10

  • The energy of electron in the nth orbit of hydrogen atom is expressed as E_m=(-13.6)/(n^(2)) eV. The shortest and longest wavelength of Lyman series will be

    A
    910Å, 1213Å
    B
    5463Å, 7858Å
    C
    1315Å, 1530Å
    D
    None of these

  • The ratio of the largest to shortest wavelength in Balmer series of hydrogen spectra is :

    A
    `(25)/(9)`
    B
    `(17)/6`
    C
    `9/5`
    D
    `5/4`

    • Similar Questions

    Explore conceptually related problems

    The ratio of the maximum to the minimum wavelengths in Balmer series of H spectrum is

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

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

    In X-ray tube the accelerating potential applied at the anode is V volt. The minimum wavelength of the emitted X-rays will be :

    The wavelength of first spectral line in the Balmer series is 6561overset@A . The wavelength of the second spectral line in the Balmer series will be:

    Home
    Profile