- Exam
- JEE Main
- Year
- 2023
- Date
- 29 January
- Shift
- Morning Shift
- Subject
- Physics
- Chapter
- Electromagnetic Waves
JEE Main 2023 · 29 January · Morning Shift · Physics · Electromagnetic Waves
Which of the following are true? A. Speed of light in vacuum is...
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 question given below :
Options
- AA and C only
- BB and D only
- CB and C only
- DC and D only
Correct answer
D. C and D only
Step-by-step solution
Speed of light in vaccum is independent of the frequency, wavelength, nature of the source, direction of propagation, motion of the source and intensity of the wave. But it depends on the refractive index of the medium.
Therefore, the speed of light in vacuum is a universal constant.
Hence, C and D are only correct.