If the refractive index of two media are equal, then
It will bend away from the normal.
Light will reflect in the same medium
Interface will absorb the light
No refraction will occur.
If the refractive indices of two media are equal, then light ray is not refracted and the interface between two media is not visible.
Light is going from some denser medium to air. The refractive index of the medium is 1.7. Calculate the angle of incidence, such that if it is further increased, total internal reflection will occur in medium I.