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प्रश्न
Explain the following term related to spherical lenses:- principal axis
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उत्तर
Principal Axis:-
The principal axis of a lens is a line passing through the optical centre of the lens and perpendicular to both the faces of the lens.
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संबंधित प्रश्न
What type of image is formed:
on a cinema screen?
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
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
Write two more characteristics of the image.
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
Define the term Pole.
Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
