Question

A student incident light beam on one mirror at an angle of 40 degree as shown in the figure then what will be the angle of reflection at mirror 2.

please answer it fast
need full explanation it's 2 mark question ​

Answer 1

Answer:

Here's your answer

Explanation:

If the angle between an incident ray and a mirror is 40°, then what is the total angle through which the ray of light turns?

Solution

The angle between the incident ray and the mirror is 40°.

Now, at the point of incidence on the mirror imagine a perpendicular line to the surface of the mirror. This line is referred to as normal. The angle between the incident ray and the normal is called the angle of incidence. This ray after being incident on mirror will get reflected.

There is a law in physics called law of refection. This law states that the angle of reflection is equal to angle of incidence.

So first we must figure out the angle of incidence.

Angle of incidence, i = 90° - 40° = 50°

The angle of reflection, r = 50°

The total angle through which the incident ray turns

= 50° + 50° = 100°.

Hope it will be helpful