Q. The wavelength of light diminishes $\mu$ times $(\mu = 1.33$ for water) in a medium. A diver from inside water looks at an object whose natural colour is green. He sees the object as

A) Green
B) Blue
C) Yellow
D) Red
Explanation

(a) Colour of light is determined by its frequency and as frequency does not change, colour will also not change and will remain green

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.