Q. If a star is moving towards the earth, then the lines are shifted towards
A) Red
B) Infrared
C) Blue
D) Green
Explanation
(c) When the source and observer approach each other, apparent frequency increases and hence wavelength decreases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.