Question

An observer measures speed of light to be c, when he is stationary w.r.t. the source.If observer moves with velocity v towards the source, then the velocity of light observed will be :

• A. $c$
• B. $c+v$
• C. $c-v$
• D. $\sqrt{1-v^2/c^2}$

Answer 1

The correct option is A $c$

Velocity of light in vacuum is a universal constant, independent of the frame of reference.

So velocity of light will be observed as c.