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:
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:
Show Hint
For questions on the speed of light:
• In vacuum, light speed is constant and independent of source motion.
• In a medium, dispersion occurs, making speed wavelength-dependent.
- C and D only
- B and D only
- B and C only
- A and C only
The Correct Option is A
Solution and Explanation
Analysis of Statements:
- A: Incorrect. The speed of light in vacuum does not depend on the direction of propagation.
- B: Incorrect. Speed of light in a medium depends on the wavelength (dispersion).
- C: Correct. The speed of light is constant in vacuum, independent of the source’s motion.
- D: Correct. The speed of light in a medium is not affected by light intensity.
Final Answer: \( \boxed{\text{C and D only}} \)
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