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प्रश्न
What is meant by (i) principal focus of a convex mirror, and (ii) focal length of a convex mirror?
उत्तर
Definitions-
(i) Principal focus (F) of a convex mirror - Focus is the point at which the incident rays, parallel to the principal axis, appear to have come from, after reflection.
(i)Focal length (f) - Focal length of a convex mirror may be defined as the distance between its pole and focus.
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संबंधित प्रश्न
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An object is placed at a long distance in front of a convex mirror of radius of curvature 30 cm. State the position of its image.
Whatever be the position of the object, the image formed by a mirror is virtual, erect and smaller than the object. The mirror then must be:
(a) plane
(b) concave
(c) convex
(d) either concave or convex
An object is placed at the following distance from a convex lens of focal length 15 cm:
(a) 35 cm
(b) 30 cm
(c) 20 cm
(d) 10 cm
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(ii) a magnified virtual image?
(iii) a diminished real image?
(iv) an image of same size as the object?
What do you observe when an object is placed anywhere between P and infinity in front of a convex mirror?
