A source emits light of wavelength `4700 Å , 5400 Å` and `6500 Å` . The light passes through red
Channel: Doubtnut
Date: 2020-08-23

A source emits light of wavelength `4700 Å , 5400 Å` and `6500 Å` . The light passes through red glass before being tested by a spectrometer. Which wavelength is seen in the spectrum