OBJECT
Incident ray
zr
P
Plane
о
Mirror
Reflected ray
Q
Point of
Incidence
IMAGE
a) Find the magnification and focal length of the mirror
b) Name the type of image form
c) Differentiate between i) regular and irregular reflection ii) real and virtual images
d) Write the characteristics of image form by a plane mirror.
Roagpur
e) If you are standing 4m from a large plane mirror. Find the distance between you and your
image
if you move 2m away from the mirror.
f) A ray of light incident normally on a surface. Find the angle of refection
g) What is the relation between angle of incidence and angle of reflection?

Answer :

Answer:

Reflection of light from a plane mirror.

Plane mirror: A plane mirror is any mirror with a flat reflective surface.

Incident ray: The ray which strikes(falls) on the surface is an incident ray.

Reflected ray: The reflected ray is the ray that we get after reflection.

Point of incidence: The point on the surface on which the incident ray strike is the point of incidence. Point of incidence is a common point for the incident and reflected ray.

Normal: Normal is perpendicular drawn from the point of incidence.

Angle of incidence: The angle between the incident ray and the normal is called the angle of incidence.

Angle of reflection: The angle between the reflected ray and the normal is called the angle of reflection.

(b) Laws of Reflection of Light

First law

The first law of reflection of light states that the angle of incidence is equal to the angle of reflection.

Second law

The incident ray, the normal, and the reflected ray, all lie in the same plane.

Answer:

Regular reflection means A type of reflection which is done on a plane surface

Irregular reflection means A type of reflection done on rough surface .

Real images are formed by concave mirror and convex lens while virtual image is formed by convex mirror and concave lens .

PLANE MIRROR CHARACTERSTICS ARE

Image will be virtual and erect always

same size as of the object

laterally inverted

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