For flint and crown glass prisms,the prism an | vedclass

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

Question

(A) For dispersion without deviation,the net deviation produced by the combination of two prisms must be zero.Let $\mu_y$ and $\mu_y'$ be the refracti

Vedclass · Accepted Answer

$\frac{(\mu_y - 1)}{(\mu_y' - 1)}$

Vedclass · Answer

(A) For dispersion without deviation,the net deviation produced by the combination of two prisms must be zero.Let $\mu_y$ and $\mu_y'$ be the refractive indices of the crown and flint glass prisms for the mean color (yellow),respectively.The deviation produced by the crown glass prism is $\delta = (\mu_y - 1)A$.The deviation produced by the flint glass prism is $\delta' = (\mu_y' - 1)A'$.For dispersion without deviation,the total deviation must be zero,so $\delta + \delta' = 0$.Since the prisms are arranged to produce dispersion,they must be placed in opposite orientations,so $(\mu_y - 1)A + (\mu_y' - 1)A' = 0$.Taking the magnitude,we have $(\mu_y - 1)A = (\mu_y' - 1)A'$.Therefore,the ratio $A'/A = \frac{(\mu_y - 1)}{(\mu_y' - 1)}$.

For flint and crown glass prisms,the prism angles are $A'$ and $A$ respectively. When they are used to produce dispersion without deviation,the ratio $A'/A$ will be:

Similar Questions

$A$ thin prism of angle $6^{\circ}$ made of glass of refractive index $1.5$ is combined with another prism made of glass of refractive index $1.75$ to produce dispersion without deviation. Then the angle of the second prism is ...... (in $^{\circ}$)

$A$ ray of light is incident normally on one of the faces of a prism of angle $30^\circ$ and refractive index $\sqrt{2}$. The angle of deviation will be.....$^\circ$

The angle of the prism is $30^o$. The rays incident at an angle of $60^o$ at one refracting face suffer a deviation of $30^o$. Then the angle of emergence is......$^o$

$A$ light ray is incident on a prism of prism angle $60^{\circ}$ such that it undergoes minimum deviation. If the refractive index of the prism is $\sqrt{2}$,then the angle of incidence is .......$^{\circ}$.

Which of the following prisms is used to see the infrared spectrum of light?

Vedclass Test Series

Exam Paper Generator

Online Exam Module