Question

A ray of light is incident on a glass slab (ng = 1.5),
thickness t, in such a manner that the angle of
refraction is 30°, then the sine of angle of incidence
will be
PLS TELL​

Answer 1

Answer:

Explanation:

By Snell's law , n1 sini = n2 sinr

Answer 2

The sine of angle of incidence is  $\frac{3}{4}$

Given:

A ray of light is incident on glass slab ng = 1.5, Thickness t in such a manner that the angle of refraction is 30

To Find:

To get the value of sine of angle of incidence

Solution:

From, Snell's law we have,

n1 sin i = n2 sin r

n1 = (air)

n2 = 1.5

Sini = 1.5 sin30

Sini = 1.5 × $\frac{1}{2}$

Sin i = $\frac{3}{4}$

Then, the sine of angle of incidence will be $\frac{3}{4}$

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