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प्रश्न
Define the following term in relation to concave mirror.
Principal axis
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उत्तर
An imaginary line passing through the pole and the centre of curvature of a spherical mirror is called principal axis.
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संबंधित प्रश्न
Name the two types of spherical mirrors. What type of mirror is represented by the:
front side of a shining steel spoon?
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis.
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror, by drawing.
An object is placed at 4 cm distance in front of a concave mirror of radius of curvature 24 cm. Find the position of image. Is the image magnified?
Select the correct option:
Looking into a mirror one finds her image diminished, the mirror is:
Define the following term:
spherical mirror
What is the relationship between the focal length and radius of curvature?
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
