A beam of light having wavelengths distributed uniformly between 450 nm to 550 nm passes through a sample of hydrogen gas. Which wavelength will have the least intensity in the transmitted beam ?
Only E2 – E4 comes in the range of energy provided. So the wavelength corresponding to that energy will be absorbed.
λ= 1242/2.55 = 487.05 nm=487 nm
487 nm wavelength will be absorbed.
