What is the ratio of velocities of light rays of wavelengths 4000 and 8000 in vacuum?
(A) 1:2
(B) 1:1
(C) 2:1
(D) cannot be determined
The correct option is (B) 1:1.
Explanation:
Velocity for all wavelengths of electromagnetic wave is constant. hence ratio of velocities is 1:1
