Shaalaa.com | Wavelength of an electron
Light of a certain wavelength has a wave number `barv` in vacuum. Its wave number in a medium of refractive index n is _______.
In hydrogen atom Balmer series is obtained when the electron jumps from ............ .
(a) higher orbit to first orbit
(b) first orbit to a higher orbit
(c) higher orbit to the second orbit
(d) second orbit to a higher orbit