State the properties of a concave and convex mirror.
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Answers
Answer:
mirror is a part of a smooth and highly polished reflecting surface. Most commonly used mirrors are plane mirrors. A spherical mirror is a part of a spherical reflecting surface. There are two types of spherical mirrors - convex mirror and concave mirror.
Convex Mirror:
Convex mirror is a curved mirror for which the reflective surface bulges out towards the light source. Convex mirrors reflect light outwards (diverging light rays) and therefore they are not used to focus light. The image is virtual, erect and smaller in size than the object, but gets larger (maximum upto the size of the object) as the object comes towards the mirror. Such mirrors are also called diverging mirrors.
If the object is put in between the centre of the mirror and focus point- In this case, the image formation by the mirror is real and bigger than the object. In addition, the image formation is also inverted. The object is kept two focal distance away from the mirror- In that case, the image will be real and inverted.
An image which is formed by a convex mirror is always erect and virtual, whatever be the point of the objects
A convex mirror generally produces anerect and smaller image of the object. Convex mirror produce virtual images of the objects spread over large area. Convex mirrors cannot produce real images.