Question

long answer type question
1- State the laws of reflection draw a diagram to show incident and reflected rays .

2- List some characteristics of plane mirror.

3- Distinguish between regular and diffuse reflection. Does diffuse reflection main the failure of the laws of reflection?

4- What are primary colours of light? Explain.

5- Write a short note on
(a) colour adition
(b) colours subtraction ​

Answer 1

Answer:

In conclusion, plane mirrors produce images with a number of distinguishable characteristics. Images formed by plane mirrors are virtual, upright, left-right reversed, the same distance from the mirror as the object's distance, and the same size as the object.

Answer 2

Answer:

First, we consider reflection, as shown in the diagram below for a light wave striking a surface. We identify the incoming ray as the incident ray and the outgoing ray as the reflected ray. Concomitantly, the angleθ

i

that the incoming ray makes with a line (dashed in the diagram) normal to the surface is called the angle of incidence. The angle θ

r

for the reflected ray is called the angle of reflect.

The law of reflection states that the angle of incidence is equal to the angle of reflection, or, stated mathematically.

And also the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane.

solution