Q 12-08-070JEE MainJEE Main 2023 (29 Jan, Shift 1)Easy
Which of the following are true?
A. Speed of light in vacuum is dependent on the direction of propagation.
B. Speed of light in a medium is independent of the wavelength of light.
C. The speed of light is independent of the motion of the source.
D. The speed of light in a medium is independent of intensity.
Choose the correct answer from the options given below:
Answer: (D) C and D only
- A: false. In vacuum light travels at $c$ in every direction.
- B: false. In a medium the speed depends on wavelength (dispersion).
- C: true. The speed of light does not depend on the motion of the source.
- D: true. The speed does not depend on intensity.
So C and D only.
Solution by Sreeraj P, M.Sc Physics