The ray AO is shown in the figure given below. The path of refracted ray and emergent ray will be:

(1) the refracted ray will bend towards normal
(2) the refracted ray will bend away from normal
(3) the emergent ray will bend towards normal
(4) emergent ray will bend away from normal

1. (1) and (3)
2. (1) and (4)
3. (2) and (3)
4. (2) and (4)

What is the deviation of a ray of light which is incident normally on the surface of two separating media :

1. 0°
2. 45°
3. 90°
4. 180°

When light passes from a denser medium to a rarer medium, its wavelength :

1. decreases
2. increases
3. remains the same
4. none