A: The speed of light in vaccum doesn't ...

A: The speed of light in vaccum doesn't depend on nature of the source, direction of propagation nature of the source, direction of propagation, motion of the source , or observer wavelength and intensity of the wave.
R: The speed of light in vaccum is a universal constant independent of all the factors listed and anything else.

IF both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark(2)

IF Assertion is true statement but Reason is false then mark(3)

If both Assertion and Reason are false statements, then mark (4)

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