a ray of light is incident at an angle i at the glass water interface.it emerges finally parallel to the surface of the water, the value of Ug(refractive index of glass) is(in term of constant terms where Uw=4/3, sin i and sin r)
a ray of light is incident at an angle i at the glass water interface.it emerges finally parallel to the surface of the water, the value of Ug(refractive index of glass) is(in term of constant terms where Uw=4/3, sin i and sin r)










