Optics Question 10
Question: Assertion : Different colours travel with different speed in vacuum. Reason : Wavelength of light depends on refractive index of medium.
[AIIMS 1998]
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: E
Solution:
The velocity of light of different colours (all wavelengths) is same in vacuum and $ \mu \propto \frac{1}{\lambda } $ .
