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प्रश्न
Define the term Centre of curvature.
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उत्तर
Centre of curvature is the centre of the imaginary sphere to which the mirror belongs.
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संबंधित प्रश्न
A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?
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.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
Name the kind of mirror used to obtain:
A real and diminished image.
State two uses of a concave mirror.
Upto what maximum distance from the pole the image in a convex mirror can be obtained? what will be the location of object then ?
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
