what is concave and convex mirror give a brief answer
Answers
Explanation:
Concave and Convex Mirrors | Ray Diagram for Convex and ... If the inner side of the spherical mirror is reflecting, it is called a concave mirror. If the outer side of the spherical mirror is reflecting, it is called a convex mirror. Image. Concave mirrors can form inverted and real images and also virtual and erect images. Convex mirrors form virtual and erect images.
Answer:
THE MAIN DIFFERENCES ARE AS FOLLOWS:
Explanation:
Definition of Convex Mirror
Convex Mirror or otherwise called as a diverging mirror, as the incident ray emerging from the same source (point), will reflect off and move in a different direction. Consequently, the light rays will not intersect on the object side of the mirror and form the virtual image of the real object.
Convex Mirror
It is a type of spherical mirror, wherein the reflective surface is curved outwards, i.e. the source of light. It forms a virtual image when after reflecting from the mirror, the ray of light meets at a definite point. The image formed is erect, and diminished in size, concerning the object.
Look at the table, to understand the position and relative size of the image, formed by the convex mirror:
POSITION OF THE OBJECT POSITION OF THE IMAGE IMAGE SIZE NATURE OF IMAGE
At infinity At the focus (F), behind the mirror Highly diminished, point sized Virtual and erect
Between infinity and the pole (P) Between P and F, behind the mirror Diminished Virtual and erect
These mirrors are used as rearview mirrors in cars or motorbikes, ATMs, hallways of schools, hospitals, stores, etc., to help the people view, what’s happening behind them.
Definition of Concave Mirror
The concave mirror is the converging mirrors, due to the fact that when parallel incident rays fall on the surface of the mirror, the rays will reflect and meet at a particular point, i.e. focal point. Its shape is identical to a spoon. The reflecting surface of a concave mirror bent inward to focus, i.e. away from the light source. When the light is bounced by the curve up to a particular area, they form an image.
Concave Mirror
It can reflect images in two ways:
When the object is closer to the mirror, the image formed will appear larger and right side up, i.e. a virtual image is formed.
When the object is farther away to the mirror, the image formed will appear small, and upside down, i.e. a real image is formed.
Look at the table below, to understand the image formation for various positions of object:
POSITION OF THE OBJECT POSITION OF THE IMAGE IMAGE SIZE NATURE OF IMAGE
At infinity At the focus Highly diminished, point sized Real and inverted
Beyond C Between F and C Diminished Real and inverted
At C At C Same size Real and inverted
Between C and F Beyond C Enlarged Real and inverted
At F At infinity Highly enlarged Real and inverted
Between P and F Behind the mirror Enlarged Virtual and erect
These mirrors are used as reflectors in the headlights of the cars, searchlights, projectors, etc. They are also used by dentists, or as shaving mirrors.
Key Differences Between Convex and Concave Mirror
The difference between convex and concave mirror is explained hereunder:
The type of spherical mirror whose reflecting surface is bulged outwards, in the sense that its face is opposite to the centre of the sphere is known as a convex mirror. A curved mirror whose reflecting surface is bent inwards, i.e. it faces towards the centre of the sphere is called a concave mirror.
The focal point of the convex mirror lies behind the mirror, wheres in the case of concave mirror the focal point lies in front of the mirror.
Convex mirror is also called as a diverging mirror as the light beam arising from the same source will reflect and diverge. As against, a concave mirror is a converging mirror, as when a parallel light beam falls on the mirror, they reflect and converge at a point.
The image formed by a convex mirror is a virtual image, while concave mirror forms a real or virtual image, depending on the position of the object.
Convex mirrors are used as rear-view mirrors in cars, to enable the driver to see the traffic behind him. On the contrary, concave mirrors are used in torches and vehicle headlights.
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