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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
Select the correct alternative
A man standing in front of a plane mirror finds his image to be at a distance of 6 meter from himself. The distance of man from the mirror is
Draw a neat two ray diagram to illustrate how a concave mirror is used as a shaving mirror.
When a ray of light strikes a plane mirror at an angle of 150 with the mirror, what will be the angle through which the ray will deviate? Illustrate with a ray diagram in the following figure.

The word PLATE written on a paper is held in front of a plane mirror. Write down the letters as seen in the following case.
The paper is held parallel to the mirror.

Say TRUE or FALSE
We see a book because it reflects the light that falls on its surface
What is reflection of light?
Which of the following ray diagrams is correct for the ray of light incident on a lens shown in figure?

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| A | B |
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| C | D |
Plane mirrors are used as looking glass, to reflect light on objects and in periscopes.
Play with a mirror
Write your name with a sketch pen on a thin sheet of paper, polythene or glass. Read your name on the sheet while standing in front of a plane mirror. Now look at your image in the mirror.




