Question

Draw a ray diagram showing the path of rays of light when it enters with oblique incidence

1. from air into water;
2. from water into air.

Answer 1

Air is optically rarer than water.

1.  As water is optically denser than air, a ray of light entering from air into the water will bend towards the normal. The ray diagram showing the path of rays of light when it enters with oblique incidence from air into water;
   
2.  As water is optically denser than air, a ray of light entering from water into the air will bend away from the normal. The ray diagram showing the path of rays of light when it enters with oblique incidence from water into air;