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 :A and C onlyB and D onlyB and C onlyC and D only
Question
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 :A and C onlyB and D onlyB and C onlyC and D only
Solution
The correct answer is C and D only.
Here's why:
A. The speed of light in a vacuum is not dependent on the direction of propagation. It is a constant value of approximately 299,792 kilometers per second.
B. The speed of light in a medium is actually dependent on the wavelength of light. This is due to a phenomenon known as dispersion, where different wavelengths of light travel at slightly different speeds in a medium.
C. The speed of light is indeed independent of the motion of the source. This is one of the postulates of Einstein's theory of relativity.
D. The speed of light in a medium is independent of its intensity. Intensity refers to the amount of energy that a wave carries per unit of time across a unit of area, and changing this does not affect the speed of light.
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