A ray of light travelling in water falls at right angles to the boundary of a parallel-sided glass block. The ray of light:
(a) is refracted towards the normal
(b) is refracted away from the normal
(c) does not get refracted
(d) is reflected along the same path
does not get refracted
When a ray of light travels along the normal incident on the boundary separating two mediums, it is not refracted.