Q. If the shift of wavelength of light emitted by a star is towards violet, then this shows that star is
A) Stationary
B) Moving towards earth
C) Moving away from earth
D) Information is incomplete
Explanation
(b) Shifting towards violet region shows that apparent wavelength has decreased. Therefore the source is moving towards the earth
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.