Question

The velocity of light emitted by a source $S$, observed by an observer $O$, who is at rest with respect to $S$ is $c$. If the observer moves towards $S$ with velocity $v$, the velocity of light as observed will be :

• A. $c+v$
• B. $c-v$
• C. $[1-(c^2/v^2){]}^{1/2}$
• D. $c$

Answer 1

The correct option is D $c$

The speed of light $c$ is a universal constant and independent of the frame of reference.

So, D is the correct answer.