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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
How is the position of an image related to the position of the object?
An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?
An optician while testing the eyes of a patient keeps a chart of letters 3 m behind the patient and asks him to see the letters on the image of chart formed in a plane mirror kept at distance 2 m in front of him. At what distance is the chart seen by the patient?
An object is placed (i) asymmetrically (ii) symmetrically, between two plane mirrors inclined at an angle of 50°. Find the number of images formed.
By drawing a neat diagram define the following:
Mirror
What should be the minimum size of a plane mirror, so that a person 182 cm high can see himself completely?
Write down the letters of the word ‘POLEX’ as seen in a plane mirror, held parallel to the plane of this paper.
