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प्रश्न
Define the term Focus of a concave mirror.
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उत्तर
The focus of a concave mirror is a point on the principal axis of the mirror, where all the rays travelling parallel to the principal axis and close to it after reflection from the mirror converge to that point.
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संबंधित प्रश्न
Explain the following term related to spherical lenses: focal length
Give one use each of a concave and a convex mirror.
Define the Focal length of a spherical mirror
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
A point light source is kept in front of a convex mirror at a distance of 40 cm. The focal length of the mirror is 40 cm. Find the position of image.
