A ray of light incident at an angle of 45°on parallel sided glass slab and emerges out grazing the vertical surface.the refractive index of the slab is. Options a)√3÷√2 b)√5÷√2 c)√3÷2. d)√5÷2
A ray of light incident at an angle of 45°on parallel sided glass slab and emerges out grazing the vertical surface.the refractive index of the slab is. Options a)√3÷√2 b)√5÷√2 c)√3÷2. d)√5÷2










