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2. ]a) 8 =(x-1) A b) 8 = (x+1) A c) 8=(A-1) u d) 8 =(A+1) 4If the refracting angle of a prism is 60° and minimum deviation is 30°, the angle of incidence will beb) 45°[ ]A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence isto (3/4) of the angle of prism. Thea) 30°c) 60°d) 90°3.is eaus |
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Answer» tion:Let δ m be the angle of minimum deviation A=δ m A=δ m μ= sin( 2A )sin 2(A+δ m ) 1.5= sin( 2A )sin( 2A+A ) 1.5= sin( 2A )sin2( 2A ) = sin( 2A )2sin 2A COS 2A 1.5=2cos 2A 0.75=cos 2A 2A =cos −1 (0.75)2A =41 o A=82 o like this answerplzz tap to BRAINLEST answer&FOLLOW me |
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