Speed of the Radiowaves, Gamma rays, X-rays and Microwaves are represented by $V_R, V_G, V_X$ and $V_M$ respectively in free space. Which option is correct?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → $V_R=V_G=V_X=V_M$
In free space, the speed of all EM waves is the same and equal to speed of light.
$V_R=V_G=V_X=V_M=c=3×10^8m/s$