These are used in daily life also. Concave mirrors are used as headlights, torches, head mirrors, solar furnaces, microscopes, telescopes, etc. A concave mirror is a spherical mirror, which has a reflecting surface, dented inwards. Concave mirrors are also called converging mirrors since light rays converge after reflection at concave mirrors. The uses of concave mirrors are listed below,.
Reflecting Telescopes: Concave mirrors are widely used in different reflecting telescopes in observational astronomy. The concave mirror in a reflecting mirror collects the light from distant celestial objects. Since the light sources are very far away, the incoming light rays are effectively parallel.
The concave mirror focuses the light rays on a flat mirror, kept at its focal distance. Due to the convergence, the intensity of the light incident on the flat mirror increases. Then the reflection of the flat mirror is seen through the eyepiece. Microscopes: A concave mirror is used in the base of a microscope as a condenser. The light from an external source is shone on the specimen, after being passed through the mirror. The concave mirror concentrates the light on the specimen only to ensure that the surroundings are relatively dark.
The orientation of the mirror can be changed by rotating it. The specimen is seen through an eyepiece. Headlights and Torches: The bulb of a headlight or a torch is placed at the focus of a concave mirror.
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June 2, at pm. Sadiya tabassum says:. When the mirror is held close to the face, an enlarged image of the skin can be seen. For shaving purposes, this allows you to see if any hair has been missed and to make sure that all hairs have been cut to the same length.
For makeup purposes, it allows you to make sure all the skin on the face is covered and blended evenly. Concave mirrors are used in motor vehicle headlights to send out strong beams of light.
Instead of reflecting an image, they are used to focus the light from the bulb. Rays of light from the bulb are reflected off the concave mirror, creating a strong beam that shines on the road. Near the base of a microscope, you may find a concave mirror mounted so it can be turned in any direction. Concave mirrors are used in microscopes to collect light from a lamp, shining it up onto a slide containing a specimen so it can be viewed through a magnification lens.
It is important to never point the mirror toward the sun to collect light; the sunlight would be focused and could blind the person looking through the lens of the microscope. Large telescopes traditionally have a concave mirror at one end.
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