White light is incident normally on a glass s | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The speed of light in a medium is given by $v = c/n$,where $c$ is the speed of light in vacuum and $n$ is the refractive index of the medium.Accor

Vedclass · Accepted Answer

red light travels faster than other colours

Vedclass · Answer

(B) The speed of light in a medium is given by $v = c/n$,where $c$ is the speed of light in vacuum and $n$ is the refractive index of the medium.According to Cauchy's formula,the refractive index $n$ of a material depends on the wavelength $\lambda$ of light.For glass,the refractive index is highest for violet light and lowest for red light.Since $v \propto 1/n$,the speed of light is inversely proportional to the refractive index.Therefore,because red light has the lowest refractive index in glass,it travels with the maximum speed compared to other colours.

White light is incident normally on a glass slab. Inside the glass slab,

Similar Questions

$A$ bird is flying $3\, m$ above the surface of water. If the bird is diving vertically down with speed $= 6\, m/s$,its apparent velocity as seen by a stationary fish underwater is $m/s$.

What is the time taken (in seconds) for light to cross a glass slab of thickness $4 \ mm$ and refractive index $\mu = 3$?

Two parallel rays of red and violet colour pass through a glass slab. Which of the following is correct?

$A$ glass slab has a thickness $t$ and a refractive index $\mu$. Calculate the time taken by light to travel through this thickness.

$A$ biconvex lens forms a real image of an object placed perpendicular to its principal axis. Suppose the radii of curvature of the lens tend to infinity. Then the image would

Vedclass Test Series

Exam Paper Generator

Online Exam Module