Q. A source emits light of wavelength $4700\mathring{\mathrm{A}},\ 5400\mathring{\mathrm{A}}$ and $6500\mathring{\mathrm{A}}$. The light passes through red glass before being tested by a spectrometer. Which wavelength in seen in the spectrum
A) 6500 $\mathring{\mathrm{A}}$
B) 5400 $\mathring{\mathrm{A}}$
C) 4700 $\mathring{\mathrm{A}}$
D) All the above
Explanation
(a) Only red colour will be seen in spectrum
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.