For an eauilateral prism it is observed that when a ray strikes grazingly at one face it emerges grazingly at the other . It's refractive index is

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Solution

i1=i2=90∘,
r1=r2=A/2=30∘
μ=sin i1/sin r1=2

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For an eauilateral prism it is observed that when a ray strikes grazingly at one face it emerges grazingly at the other . It's refractive index is

i1=i2=90∘, r1=r2=A/2=30∘ μ=sin i1/sin r1=2

i1=i2=90∘,
r1=r2=A/2=30∘
μ=sin i1/sin r1=2