Question

a ray of light is incident on a surface of a glass plate of refractive index 1.55 at a polarised angle. The angle of refraction is

Answer 1

Hey there....

Answer:-
Given,
refractive index= 1.55


Formula-
Miu = sin I / sin r

1.55= sin 90/ sin r
1.55= 1/ sin r



$sin \: r \: = 1 \div 1.55 = 0.6451$
Thus the angle = 360/0.65

Angle = 90 degree.

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Answer 2

Answer:

The angle of refraction is $32^{\circ} 50^{\prime}.$

Explanation:

Given:

Refractive index of glass, $\mu=1.55$

Calculate the Angle of refraction (r):

We know the formula,

$\tan{i}_{{p}}=\mu\rightarrow(1)$

Substitute the $\mu$ value in equation (1)

$\tan i_{p}=1.55$

Find the $i_p$ value,

${i}_{{p}}=\tan ^{-1}(1.55)$

$=57^{\circ} 10^{\prime}$

We know, ${i}_{{p}}+r=90^{\circ}$

Calculate the (r) value:

$r=90^{\circ}-{i}_{p}$

Substitute the $i_p$value,

$=90^{\circ}-\left(57^{\circ} 10^{\prime}\right)$

$\therefore r=32^{\circ} 50^{\prime}$

Hence, the angle of refraction of the ray of light is $32^{\circ} 50^{\prime}.$