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Cbse class 12 ncert book for the chapter9, ray optics and optical instruments. The geometry of reflection of an incident ray is shown in fig. Physics 354 small portion of the sphere can be considered as a plane and we have what is known as a plane wave fig. Class 12 physics index page get all topics of class 12 physics. Get here ncert book class 12 physics chapter 9 in english in pdf format.
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