Assertion: The speed of light in glass depends on colour of light.
Reason: The speed of light in glass vg = c/ng , the refractive index (ng) of glass is different for different colours.
Pls explain
Solution:
Both assertion and reason are correct.
Both assertion and reason are correct.
Speed of light is inversely proportion to the refractive index and it decreases when light travels from rarer to denser medium . In vacuum all the colours have same velocity but their velocity changes when they enter in a medium. In the medium their velocity changes due to change in their wavelength.Red has highest wavelength and travels fastest, while the violet travels slowest.