Question

The diagram below shows the relation between angle of deviation and angle of

incidence when refraction takes place through an equilateral prism. Use this


graph to find out the value of x​

Answer 1

Answer:

Value of x in the given graph is 58 degree

Explanation:

As we know that deviation in the prism is given as

$\delta = i + e - A$

as we know that this is an equilateral prism so we have

$A = 60^o$

$\delta = 41^o$

$i = 43^o$

so we have

$41 = 43 + x - 60$

$x = 58 degree$

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Topic : Deviation in prism

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Answer 2

Answer:

X = 58.

Explanation:

The angle of emergence when i=41

A=60

i=43

d=41

i+ e = d +A

43 + e = 41+60

e = 58

If we use the principle of reversibility

for the same deviation ( d=41)

possible values are

i=43 & e=58

or

i=58 &  e= 43

as the angle of incidence keeps increasing

x= 58