Why does a ray of light bend when it travels from one medium into another?

(a) √3/√2 is the correct option

(d) Glycerine

Hint— Draw the diagram and explain using laws of refractions at both the interfaces.

The light ray bends towards the normal. When a ray of light travels from an optically rarer medium to an optically denser medium, it gets bent towards the normal. Since...

(c) disturbance moves

As per the laws of reflection  The angle of incidence ∠i = angle of reflection ∠r  Here as given ∠i + ∠r = 90°  ∴ ∠i + ∠i = 90 °  or ∠i =...

Light ray travelling in air and entering obliquely into water is bent towards the normal; because the speed of the ray decreases in water.

Yes, a convergent lens in one medium becomes divergent in another medium when the refractive index of the medium is greater than the refractive index of the material of the...

 speed of light in medium Y is (b) v/sin θ 

No; when light travels from a rarer to denser medium, its frequency remains unchanged. According to quantities theory, the energy of a light beam depends on frequency and not on...