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प्रश्न
Name the physical principle on which the working of optical fibers is based.
उत्तर
Optical fibers are based on the principle of total internal reflection.
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संबंधित प्रश्न
Calculate the distance of an object of height h from a concave mirror of radius of curvature 20 cm, so as to obtain a real image of magnification 2. Find the location of the image also.
Use the mirror equation to deduce that the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole.
An object is kept on the principal axis of a concave mirror of focal length 10 cm. at a distance of 15
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(a) Virtual and magnified
(b) Virtual and diminished
(c) Real and magnified
(d) Real and diminished
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