20 A convex mirror is a spherical reflecting surface in which its bulging side faces
the light source. There are numerous uses of convex mirror which is also
referred as fish eye mirror by automobile enthusiasts and diverging mirror by
physicists.
The convex mirror always forms a virtual image of the object and the image
formed by the convex mirror is smaller than the size of the actual object.
Therefore, the most common convex mirror uses are in places where bigger
objects are to be viewed in a smaller size. Since convex mirrors have a wider
view field than concave mirrors and plane mirrors, they are mostly used in side
mirrors of automobiles. Some of the most vital and common uses of convex
mirror are: Large offices, stores, and hospitals use convex mirror to let people
see around the corner so that they can avoid running into each other and prevent
any collision. One of the most common uses of convex mirror is for making
sunglasses. The convex mirror reflects the sunlight away from the person’s eye
wearing the sunglass. Convex mirrors are widely used as rear view mirrors in
automobiles and vehicles because it can diverge light beams and make virtual
images. Convex mirrors are widely used for making magnifying glasses. In order
to make a magnifying glass, two convex mirrors are placed back to back.
Convex mirrors are also used for security purposes in various places. They are
places near ATM’s so that bank customers can check if someon20 (iii) Find the focal length of the convex mirror if its radius of curvature is 30cm.
20 (iv) Magnification produced by the Convex Mirror is
I. Positive and less than one
II. Negative and less than one
III. Positive and greater than one
IV. Positive and less than one
20 (v) Convex mirrors are used as rear view mirrors in vehicles because
(a) They cover larger distance
(b) They cover wider field of view
(c) They cover larger distance and wider field of view
(d) They form real image
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Explanation:
20 . IV. option ll
v.option.c
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