Light travels more quickly through water than through glass. (a) Which is optically denser : water or glass ? (b) If a ray of light passes from glass into water, which way will it bend : towards the normal or away from the normal ?
A prism disperses a ray of white light while a rectangular glass slab does not. This is because-
How speed of different light colour affect refraction or bending when change in medium for red colour it bend very little and violet colour bend very more when passes through prism so how bending works for different light colour?