How Light Reflects

1. Choose the correct statement from those given below

The normal is the line parallel to a surface

The reflection of light is three dimensional

A mirror causes diffuse reflection

A rough surface causes specular reflection

The angle of incidence equals the angle of reflection

The statement "The angle of incidence equals the angle of reflection" is a fundamental law of reflection. It states that when a ray of light strikes a surface and gets reflected, the angle at which it approaches the surface (angle of incidence) is equal to the angle at which it bounces off the surface (angle of reflection). This law holds true for all types of surfaces and is a key principle in understanding the behavior of light when it interacts with objects.

Explanation

The statement "The angle of incidence equals the angle of reflection" is a fundamental law of reflection. It states that when a ray of light strikes a surface and gets reflected, the angle at which it approaches the surface (angle of incidence) is equal to the angle at which it bounces off the surface (angle of reflection). This law holds true for all types of surfaces and is a key principle in understanding the behavior of light when it interacts with objects.

2. The scattering of light off a rough surface is called...

Specular reflection

Diffuse reflection

Specular refraction

Diffuse refraction

Diffuse reflection refers to the scattering of light off a rough surface. Unlike specular reflection, which occurs when light reflects off a smooth surface and maintains its original direction, diffuse reflection causes light to scatter in multiple directions due to the irregularities on the surface. This phenomenon is commonly observed when light bounces off surfaces such as paper, fabric, or walls, creating a softer and less focused reflection.

Explanation

Diffuse reflection refers to the scattering of light off a rough surface. Unlike specular reflection, which occurs when light reflects off a smooth surface and maintains its original direction, diffuse reflection causes light to scatter in multiple directions due to the irregularities on the surface. This phenomenon is commonly observed when light bounces off surfaces such as paper, fabric, or walls, creating a softer and less focused reflection.

3.

In the figure above, the angle of incidence is

What is the angle of reflection?

1

2

3

4

5

The angle of reflection is the same as the angle of incidence. In this case, since the angle of incidence is 3, the angle of reflection is also 3.

Explanation

The angle of reflection is the same as the angle of incidence. In this case, since the angle of incidence is 3, the angle of reflection is also 3.

4. When light strikes a smooth and polished surface, what type of reflection occurs?

Diffuse reflection

Regular reflection

Absorption

Refraction

Regular reflection takes place when light strikes a smooth and polished surface, such as a mirror or a glass window. In this case, the light reflects at equal angles, producing a clear and sharp reflection.

Explanation

Regular reflection takes place when light strikes a smooth and polished surface, such as a mirror or a glass window. In this case, the light reflects at equal angles, producing a clear and sharp reflection.

5.

The diagram shows a single ray of light being directed at a plane mirror. What are the angles of incidence and reflection?

In the case of a plane mirror, the angle of incidence is equal to the angle of reflection. This means if a single ray of light is directed at a plane mirror with an angle of incidence of 40 degrees, then the angle of reflection will also be 40 degrees.

Explanation

In the case of a plane mirror, the angle of incidence is equal to the angle of reflection. This means if a single ray of light is directed at a plane mirror with an angle of incidence of 40 degrees, then the angle of reflection will also be 40 degrees.