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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.
Define the following term in the context of spherical mirrors:- Principal focus
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
Which type of spherical mirror will it provide?
Define the following term in relation to concave mirror.
Principal focus
Define the following term in relation to concave mirror.
Focal length
Complete the following diagrams shown in the following figures by drawing the reflected rays.
A spherical mirror whose reflecting surface is curved outwards is called ______ mirror.
