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  • A ray PQ incident normally on the refracting face BA is refracted in the prism BAC made of material of refractive index 1.5. Complete the path of ray through the prism. Form which face will the ray emerge? Justify your answer. <img src="data:ima

A ray PQ incident normally on the refracting face BA is refracted in the prism BAC made of material of refractive index 1.5. Complete the path of ray through the prism. Form which face will the ray emerge? Justify your answer.

 

 

 

 
 
 
 
 

Answers (1)

i =0 , so r1 = 0 & r_{1}+r_{2}= A\Rightarrow r_{2}= A\Rightarrow r_{2}= 30^{\circ}

i_{c}= \sin^{-1}\left ( \frac{1}{n} \right )= \sin^{-1}\left ( \frac{1}{1\cdot 5} \right )= \sin^{-1}\left ( 0\cdot 66 \right )> 30^{\circ}
Since the ray incident on AC at 30^{\circ} , TIR is absent and refraction takes place at AC

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Safeer PP

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