1.

A thin Prims P1 with angle 4° and made from glass of refractive index 1.54 is combined with another thing Prism P2 made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of Prism P2 is : (A) 5.33° (B) 4° (C) 3° (D) 13°

Answer»

Correct option is (B) 4° 



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