From the diagram, the correct equation for the refractive...
From the diagram, the correct equation for the refractive index n of the medium is
A.
n = tan i
B.
n = sinisin90o
C.
n = sinicos(90o−i)
D.
n = sin 90oC
Correct answer is A
refractive index(n) = sinisinr
where r = 180-(90+i) → r=90-i
since sin(90-i)=cos i
: refractive index(n) = sinicosi
→ tan i
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