shortnote on plane mirror
Answers
Explanation:
A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. Plane mirrors are the only type of mirror for which a real object always produces an image that is virtual, erect and of the same size as the object.
Answer:
Point of incidence: Point on the plane mirror where reflection takes place.
Plane of reflection: Plane in which incident ray, reflected ray and the normal lies. It is perpendicular to the plane of the mirror.
Principal axis: A line (same as normal for plane mirror) from which object height and image height is measured.
USES OF PLANE MIRROR - DEFINITION
Uses of Plane Mirror :
1. They are used as looking glass.
2. They are used in solar cookers.
3. They are also used in constructing periscope which is used in submarines.
4. They are also used to make kaleidoscope, a toy which produces beautiful patterns.
5. They are also used in various scientific instruments.
Characteristics of the image formed by a plane mirror :
It is virtual
It is erect and of the same size as the object
The distance of the object from the plane mirror is the same as the distance of the image from the plane mirror.
Laws of Reflection
There are two laws of reflection and they are:
The angle of incidence and the angle of reflection are always equal.
The incident ray, the normal at the point, and the reflected ray, all lie on the same plane.
Properties of an image formed by plane mirror
The image obtained is virtual.
The image is laterally inverted.
The image is erect.
The size of the image is the same as the size of the object.
The distance between the image obtained is the same as the distance between the object from the mirror.
Explanation:
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