1.

If relative permittivity and relative permeability of a medium are 3 and 4/3 respectively. The critical angle for this medium is.(1) 45º (2) 60º (3) 30º (4) 15º

Answer»

Answer is (3)

V = 1/√{μɛ}

n = √{μrɛr} = 2

sin c = 1/2

c = 30º



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