ICSE Class 10 Physics 2023 Solved Paper

SECTION B

The diagram below shows the ray ${O P}$ travelling through an equilateral prism of a certain material.

Question : 38 of 76

Marks: +1, -0

Calculate the value of

i_2

, if the angle of deviation is

43^{∘}

Solution:

Here, angle of prism

(∠ {\A})=60^{∘}

(

∵

It is an equilateral prism)
Angle of incidence

(i_1) =65^{∘}

Angle of deviation

(δ)=43^{∘}

Angle of emergence

(i_2) =

?
We know,

i_1+i_2= {\A}+δ

⇒\;65^{∘}+i_2\;=60^{∘}+43^{∘}

∴ \;i_2\;=103^{∘}-65^{∘}

=38^{∘}

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