A ray incident a 45° on one refracting surface of a prism of angle 60° , suffers a deviation of 55° . What is the angle of emergence

Question

A ray incident a 45° on one refracting surface of a prism of angle 60° , suffers a deviation of 55° . What is the angle of emergence (A) 95°  (B) 45°  (C) 30°  (D) 70°

Tardigrade Admin · Accepted Answer

Using δ=i1+i2-A⇒ 55=45+i2-60 ⇒ i2=70°

Q. A ray incident a $4 5^{\circ}$ on one refracting surface of a prism of angle $6 0^{\circ},$ suffers a deviation of $5 5^{\circ} .$ What is the angle of emergence

$9 5^{\circ}$

$4 5^{\circ}$

$3 0^{\circ}$

$7 0^{\circ}$

Using $δ = i_{1} + i_{2} - A \Rightarrow 55 = 45 + i_{2} - 60$
$\Rightarrow i_{2} = 7 0^{\circ}$

Q. A ray incident a 45∘ on one refracting surface of a prism of angle 60∘, suffers a deviation of 55∘. What is the angle of emergence

95∘

45∘

30∘

70∘