The absolute refractive index of gas is 3/2. Find
critical angle.
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refractive index(rf) of glass=3/2
critical angle=c=?
rf=1/sin c
sin c=1/rf
c=sin^-1{1/(3/2)}
c=sin^-1(2/3)
c=41.81..
critical angle=c=?
rf=1/sin c
sin c=1/rf
c=sin^-1{1/(3/2)}
c=sin^-1(2/3)
c=41.81..
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