A prism having refractive index √2 and refracting angle 30∘, has one of the refracting surface polished. A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is :

A prism having refractive index √2 and refracting angle 30∘, has o

1.	A prism having refractive index √2 and refracting angle 30∘, has one of the refracting surface polished. A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is :
Answer» A prism having refractive index $\sqrt{2}$ and refracting angle $30^{\circ}$ , has one of the refracting surface polished. A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is :

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A prism having refractive index √2 and refracting angle 30∘, has one of the refracting surface polished. A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is :

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