a ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each other of these angles are equal to (3/4) of the angle of prism . The angle of deviation is
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i = 3/4A
e = 3/4A
D = 2i/A = 3/2A÷A= 3/2
e = 3/4A
D = 2i/A = 3/2A÷A= 3/2
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