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प्रश्न
State two uses of a plane mirror.
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उत्तर
Two uses of plane mirror:
- In barber's shop for seeing the hairs at the back of head, two mirrors facing each other are fixed on opposite walls at the front and back of the viewer.
- In solar heating devices such as a solar cooker, solar water heater, etc., a plane mirror is used to reflect the incident light rays from sun on the substance to be heated.
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संबंधित प्रश्न
Draw a diagram to show the reflection of a light ray incident normally on a plane mirror.
The diagram in Fig. shows an incident ray AO and the reflected ray OB from a plane mirror. The angle AOB is 30°. Draw normal on the plane mirror at the point O and find:
The diagram in fig. shows an incident ray AO and the normal ON on a plane mirror. Draw the reflected ray. State the law you use to draw the direction of the reflected ray.
Two plane mirrors are placed making an angle θ in between them. Write an expression for the number of images formed of an object placed in between the mirrors. State the condition, if any.
In the barber's shop, two plane mirrors are placed :
Prove geometrically that when plane mirror turns through a certain angle, the reflected ray turns through twice the angle.
A boy stands 4 m away from the plane mirror. If the boy moves `1/2` m towards the mirror, what is now the distance between the boy and his image? Give a reason for your answer.
Write down the letters of the word ‘POLEX’ as seen in a plane mirror, held parallel to the plane of this paper.
Select the correct option:
In case of concave mirror, the minimum distance between an object and its real image is:
