JEE Main 202125 Feb, Evening shiftPhysicsEasyAtoms and Nuclei183× since 2002The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is :AOption A. 194.8 nmBOption B. 490.7 nmCOption C. 913.3 nmDOption D. 121.8 nmCheckSkip · show solution
