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प्रश्न
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
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उत्तर
Concave mirrors are used for headlights as it gives larger area of magnification for the light. Convex mirrors give a virtual, erect, and diminished image of the objects placed in front of them. They are preferred as a rear-view mirror in vehicles because they give a wider field of view, which allows the driver to see most of the traffic behind him.
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संबंधित प्रश्न
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
Why is a hole burnt in the carbon paper?
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
Define the radius of curvature.
