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प्रश्न
Define the following term in relation to concave mirror.
Principal focus
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उत्तर
It is a point on the principal axis, where a beam of light, parallel to the principal axis, after reflection actually meet.
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संबंधित प्रश्न
A student focused the Sun rays using an optical device 'X' on a screen S as shown.
From this it may be concluded that the device 'X' is a (select the correct option)
(A) Convex lens of focal length 10 cm.
(B) Convex lens of radius of curvature 20 cm.
(C) Convex lens of focal length 20 cm.
(D) Concave mirror of focal length 20 cm.
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
How is the focal length of a spherical mirror related to its radius
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.
What type of mirror can be used to obtain a real image of an object?
Define the following term in relation to concave mirror.
Aperture
Define the term Pole.
