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प्रश्न
The focal length of a convex mirror is equal to its radius of curvature.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm. Write four characteristics of the image formed by the mirror.
Find the nature and focal length of a spherical mirror whose radius of curvature is +24 cm.
Draw diagram to show the action of convex mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length f, of the convex mirror.
What is the nature of a mirror having a focal length of, +10 cm?
Fill in the following blank with a suitable word:
A ray of light which is parallel to the principal axis of a convex mirror, appears to be coming from ............ after reflection from the mirror.
An arrow 2.5 cm high is placed at a distance of 25 cm from a diverging mirror of focal length 20 cm. Find the nature, position and size of the image formed.
The magnification produced by a spherical mirror and a spherical lens is + 0.8.
(a) The mirror and lens are both convex
(b) The mirror and lens are both concave
(c) The mirror is concave but the lens is convex
(d) The mirror is convex but the lens is concave
The mirror used as rear-view mirror in vehicles ______.
The image formed by these mirrors is ______ than the object.
A boy is standing at a distance of 3m in front of a plane mirror. The distance between the boy and his image is ______m.
