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Physics Chapter on Reflection of Light

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Questions and Answers

What happens to the angle of incidence when light reflects off a surface?

It is always 90 degrees.

It becomes half of the angle of reflection.

It is unequal to the angle of reflection.

It is equal to the angle of reflection. (correct)

Which type of reflection is characterized by light scattering in many directions?

Diffuse Reflection (correct)

Specular Reflection

Regular Reflection

Total Reflection

What do we know about the virtual image formed by a plane mirror?

It is inverted upside down.

It is of the same size as the object. (correct)

It appears in front of the mirror.

It is always larger than the object.

In the laws of reflection, what role does the 'normal' line play?

<p>It is an imaginary line perpendicular to the surface.</p> Signup and view all the answers

What is one application of reflection mentioned in the content?

<p>Used in optical devices like telescopes.</p> Signup and view all the answers

Study Notes

Reflection of Light

Reflection is the bouncing of light off a surface.
Light changes direction when it hits a surface and bounces back.
Reflection allows us to see objects.

Laws of Reflection

First Law: The angle of incidence equals the angle of reflection.
Second Law: The incident ray, reflected ray, and normal all lie in the same plane.

Types of Reflection

Regular Reflection: Occurs on smooth surfaces (e.g., mirrors).
- Light reflects in a single, predictable direction.
Diffuse Reflection: Occurs on rough surfaces (e.g., walls, paper).
- Light scatters in many directions, preventing clear images.

Image Formation

When light reflects off a plane mirror, a virtual image is formed.
The image is the same size as the object.
The image is upright (erect).
The image distance equals the object distance.
The image appears behind the mirror.

Applications of Reflection

Mirrors are used in many everyday items (makeup mirrors, car mirrors).
Mirrors are also used in optical devices like telescopes.
Mirrors are used in periscopes.

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Description

This quiz covers the fundamentals of light reflection, including the laws of reflection and the different types of reflection. Explore concepts like image formation in mirrors and the practical applications of reflection in everyday life. Test your understanding of how light interacts with surfaces!