Assertion :In a glass medium red light travels faster than blue light Reason: Red light has a wavelength longer than blue.
Assertion :In a glass medium red light travels faster than blue light Reason: Red light has a wavelength longer than blue.
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Red light and blue light travel the same speed in a vacuum, however they travel different speeds when traveling through any medium other than a vacuum as shown in the figure.
In most media, blue light has a higher index of refraction (usually denoted with the letter n) than red light. The higher the index of refraction, the slower the light goes compared to its speed in a vacuum. This relationship is governed by the following equation: v = c/n
where v is the speed of light in a particular medium
n is the index of refraction of light in that medium
c is the speed of light in a vacuum. Since red has a smaller n than blue in most media, red travels faster then blue in most media.
Red light and blue light travel the same speed in a vacuum, however they travel different speeds when traveling through any medium other than a vacuum as shown in the figure.
In most media, blue light has a higher index of refraction (usually denoted with the letter n) than red light. The higher the index of refraction, the slower the light goes compared to its speed in a vacuum. This relationship is governed by the following equation: v = c/n
where v is the speed of light in a particular medium
n is the index of refraction of light in that medium
c is the speed of light in a vacuum. Since red has a smaller n than blue in most media, red travels faster then blue in most media.
