Question

A ray of light incidents on a plane mirror at an angle of 300. The deviation produced in the ray is

Answer 1

▶ Correct Question :

▪ A ray of light incidents on a plane mirror at an angle of 30°, Find the deviation produced in the ray.

▶ Solution :

Given :

✏ Angle of incidence = 30°

To Find :

✏ Net deviation of ray of light

Formula :

✳ Formula of deviation in terms of angle of incidence for plane mirror is given by

$\underline{\boxed{\bf{\pink{\delta=180\degree-2\angle{i}}}}}$

• $\delta$ denotes deviation
• ㄥi denotes angle of incidence

Calculation :

$\rightarrow\sf\:\delta=180\degree-2\angle{i}\\ \\ \rightarrow\sf\:\delta=180\degree-2(30\degree)\\ \\ \rightarrow\sf\:\delta=180\degree-60\degree\\ \\ \rightarrow\underline{\boxed{\bf{\purple{\large{\delta=120\degree}}}}}$

⏭ Please, see the attachment for better understanding.

Answer 2

Explanation:

____________________________

$\bf \huge \: Correct \: QUESTION\: \: \:$

A ray of light incidents on a plane mirror at an angle of 30. The deviation produced in the ray is

____________________________

$\bf \huge \: GIVEN\: \: \:$

• A ray of light incidents on a plane mirror at an angle of 30°.

____________________________

$\bf \huge \: To\: Find\: \:$

• The deviation produced in the ray is

Since angle of incident =angle of reflection

$\bf\red{30x = 180}\: \:$

$\bf\red{x= 180-30}\: \:$

$\bf\red{x=120°}\: \:$

The deviation produced in the ray is 120°