Refraction of Light

A glass slab is placed over a piece of paper on which VIBGYOR is printed with each letter in its corresponding colours. The colour that appears to be raised maximum is :

A light ray enters from medium A to medium B as shown in the figure. The refractive index of medium A relative to B will be

A student performs the experiment on tracing the path of ray of light passing through a rectangular glass slab for different angles of incidence. He measures the angle of incidence $\angle i$, angle refraction $\angle r$ and angle of emergence $\angle e$ for all his observations. He would find that in all cases.

Assertion: If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small.

Reason: Refractive index of the medium is inversely proportional to the velocity of the light.

Assertion(A): Light does not travel in the same direction in all the media.

Reason (R): The speed of light does not change as it enters from one transparent medium to another.

The ratio between the speed of light in medium to speed in vacuum is the refractive index. When light travels in a medium other than the vacuum, the atoms of that medium continually absorb and re-emit the particles of light, slowing down the speed of light. 

The refractive index of glass is $1.5$. If the light is incident on the glass at $45°$ from the air $\left(n=1\right)$, calculate the angle of emergence.

The velocity of light in a medium is $1.5\times {10}^8 \raisebox{1ex}{$\mathrm{m}$}\!\left/ \!\raisebox{-1ex}{$\sec $}\right.$ what is the refractive index of the medium with respect to air, if the velocity in air is $3\times {10}^8 \raisebox{1ex}{$\mathrm{m}$}\!\left/ \!\raisebox{-1ex}{$\sec $}\right.$

The ratio between the speed of light in medium to speed in vacuum is the refractive index. When light travels in a medium other than the vacuum, the atoms of that medium continually absorb and re-emit the particles of light, slowing down the speed of light. 

The refractive index of glass is $1.5$. If the light is incident on the glass at $45°$ from the air $\left(n=1\right)$, calculate the angle of refraction.

The ratio between the speed of light in medium to speed in vacuum is the refractive index. When light travels in a medium other than the vacuum, the atoms of that medium continually absorb and re-emit the particles of light, slowing down the speed of light. 

The refractive index of glass is $1.5$. Calculate the speed of light in the glass.

When a ray of light hits a glass slab, it will deviate from its normal path and then _____ ray is formed.

Light falls obliquely on the surface of a thick glass slab as shown in the figure. Which statement among the following is correct?

The refractive index of water is

A coin at the bottom of a water tank appears to be raised because of the phenomenon of 

Speed of light is maximum in which of the following?

Which of the following statements is correct regarding the propagation of light of different colours of white light in air?

If the speed of light in a medium reduces to half its value in vacuum, what is the absolute refractive index of the medium?

A coin submerged in water appears to be raised due to the phenomena of ______.