(A) The deviation produced by a prism is given by the formula $\delta = i + e - A$,where $i$ is the angle of incidence,$e$ is the angle of emergence,a

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Normal to the face through which it emerges

(A) The deviation produced by a prism is given by the formula $\delta = i + e - A$,where $i$ is the angle of incidence,$e$ is the angle of emergence,and $A$ is the prism angle.Given: $i = 60^o$,$A = 30^o$,and $\delta = 30^o$.Substituting these values into the formula: $30^o = 60^o + e - 30^o$.Solving for $e$: $e = 30^o + 30^o - 60^o = 0^o$.Since the angle of emergence $e$ is $0^o$,the emergent ray is normal (perpendicular) to the surface of the prism.Therefore,the emergent ray makes an angle of $90^o$ with the face through which it emerges.

Class 12 Physics Ray Optics and Optical Instruments Refraction Through Prism

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$A$ ray of light is incident at an angle of $60^o$ on one face of a prism of angle $30^o$. The ray emerging out of the prism makes an angle of $30^o$ with the incident ray. The emergent ray is

A
Normal to the face through which it emerges
B
Inclined at $30^o$ to the face through which it emerges
C
Inclined at $60^o$ to the face through which it emerges
D
None of these

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Refraction Through Prism

$A$ prism having refractive index $\sqrt{2}$ and refracting angle $30^{\circ}$ has one of the refracting surfaces silvered. The beam of light incident on the other refracting surface will retrace its path,if the angle of incidence is $\left[\sin \frac{\pi}{6}=0.5\right]$

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The angle of incidence for a ray of light at a refracting surface of a prism is $45^o$. The angle of the prism is $60^o$. If the ray suffers minimum deviation through the prism,the angle of minimum deviation and the refractive index of the material of the prism,respectively,are:

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The critical angle between an equilateral prism and air is $45^o$. If the incident ray is perpendicular to the refracting surface,then

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$A$ prism $ABC$ of angle $30^\circ$ has its face $AC$ silvered. $A$ ray of light incident at an angle of $45^\circ$ at the face $AB$ retraces its path after refraction at face $AB$ and reflection at face $AC$. The refractive index of the material of the prism is

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For a thin prism,$\delta_1$ is the angle of deviation produced when the prism is placed in air. When the prism is immersed in water,the angle of deviation produced is $\delta_2$. Given ${ }_{a} \mu_{g}=\frac{3}{2}$ and ${ }_{a} \mu_{w}=\frac{4}{3}$. The ratio $\delta_2: \delta_1$ is

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$A$ ray of light is incident at an angle of $60^o$ on one face of a prism of angle $30^o$. The ray emerging out of the prism makes an angle of $30^o$ with the incident ray. The emergent ray is

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$A$ prism having refractive index $\sqrt{2}$ and refracting angle $30^{\circ}$ has one of the refracting surfaces silvered. The beam of light incident on the other refracting surface will retrace its path,if the angle of incidence is $\left[\sin \frac{\pi}{6}=0.5\right]$

The angle of incidence for a ray of light at a refracting surface of a prism is $45^o$. The angle of the prism is $60^o$. If the ray suffers minimum deviation through the prism,the angle of minimum deviation and the refractive index of the material of the prism,respectively,are:

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