Question

find angle of incidence ​

Answer 1

hello dear your Ans is B......

Answer 2

Answer:

60°

Explanation:

Let the angle of incidence be β.

∴ Angle of incidence = Angle of reflection = β

⇒ Angle of incidence + Angle of reflection = β + β = 2β

$\gamma=180^{o} - 2\beta$

$\implies 60^{o}=180^{o} - 2\beta$

$\implies 2\beta=180^{o}-60^{o}$

$\implies 2\beta=120$

$\implies \beta=\frac{120}{2} = \bold6 \bold0^{\bold o}$