[" How much energy will be emitted when the electron in a hydrogen atom undergoes "],[" transition from an energy level with "n=4" to an energy level with "n=2?]

what is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n=4 to and energy level with n=2 ?

what is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n=4 to and energy level with n=2 ?

What is the wavelength of llight emitted when the electron in a hydrogen atom undergoes transition from an energy level with n=4 to an energy level with n=2 ?

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n = 4 to an energy level with n = 2

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n= 4 to an energy level with n = 2 ?

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n = 5 to an energy level with n = 3 ?

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes trnsition from an energy level with n = 4 to an energy level with n = 2 ?

What is the wavelength of light emitted when the electron of a hydrogen atom undergoes a transition from an energy level with n= 4 to an energy level with n = 2 ? .What is the colour corresponding to this wavelength ?