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प्रश्न
Define the following term in the context of spherical mirrors:- Centre of curvature
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उत्तर
Centre of curvature:-
The centre of curvature is the centre of a sphere from which the given spherical mirror (convex or concave) is obtained. It is denoted by the letter (C).
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- 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?
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
A real and enlarged image can be obtained by using a
The distance from the pole to the focus is called ______.
The image formed in a plane mirror is always inverted.
What is “aperture”?
