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प्रश्न
Define the following term in the context of spherical mirrors:- Principal axis
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उत्तर
Principal axis of a spherical mirror:-
The imaginary straight line joining the pole (P) and the centre of curvature (C) is termed as the principal axis.
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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.
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
Why is a hole burnt in the carbon paper?
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Name the kind of mirror used to obtain :
A real and enlarged image
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
