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Two light beams fall on a transparent material block at point 1 and 2 with angle ( ₁ ) and ( _ 2^ ) respectively, as shown in figure. After refraction, the beams intersect at point 3 which is exactly on the interface at other end of the block. Given : the distance between 1 and 2, ( d =4 3 ~cm ) and ( ₁= ₂= ⁻¹ ( n ₂ 2 n ₁ ) ), where refractive index of the block ( n ₂ ) refractive index of the outside medium ( n ₁ ),

Correct answer

0

Step-by-step solution

aligned & n₁ n₂ 2 n₁ =n₂ r & r= 1 2 aligned aligned & r=30^ & r= ( d / 2 t ) & t= d 2 r = d 3 2 = (4 3 ) 3 2 & =6 ~cm aligned

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