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प्रश्न
Give two uses of concave mirror.
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उत्तर
Two uses of concave mirror are:
(a) Concave mirror is used as A Reflector in head lights of cars and in search light. The source of light (bulb) is placed at the principal focus and the reflector forms parallel beam of light.
(b) For doctors to examine throat, ear, nose, and eyes, light is focused on the help of a concave mirror.
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संबंधित प्रश्न
David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be ______.
State four characteristics of the image formed by a plane mirror.
How is the position of image formed by a plane mirror related to the position of the object ?
What is meant by lateral inversion of an image in a plane mirror ? Explain it with the help of a diagram.
A ray is incident on a plane mirror . Its reflected ray is perpandicular to the incident ray . Find the angle of incidence .
An object 1.5 cm high when placed in front of a concave. the mirror produces a virtual image 3 cm high. If the object is placed at a distance of 6 cm from the pole of the mirror, calculate:
- the position of the image
- the focal length of the mirror.
What happens when light hits a transparent object?
Which of the following can make a parallel beam of light when light from a point source is incident on it?
Plane mirrors are used as looking glass, to reflect light on objects and in periscopes.
