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प्रश्न
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उत्तर
Linear magnification is defined as the ratio of the height of the image to the height of the object. It is taken to be positive for an image to be virtual and erect and negative when image is real and inverted.
Magnification = height of image / height of object.
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संबंधित प्रश्न
We can obtain an enlarged and erect image by a convex mirror.
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
Write true or false
A virtual image formed by a spherical mirror is always erect and situated behind the mirror.
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
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.
Which mirror will you prefer to use as a rear view mirror in a car : plane mirror or convex mirror? Give one reason.
Define the following term in relation to concave mirror.
Principal axis
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
