Q 1164178955.     The wavelength of the first spectral line in the Balmer series of hydrogen atom is `6561 A^@.` The wavelength of the second spectral line in the Balmer series of single-ionized helium atom is

JEE 2011
A

`1215 A^@`

B

`1640 A^@`

C

`2430 A^@`

D

`4687 A^@`

HINT

`(hc)/lambda = 13.6(Z)^2[1/(n_1)^2 -1/(n_2)^2 ]`
0
Success Rate: NAN %
Sr. No.SubjectTagCorrectRecorded Answer