Draw a ray diagram to show why a stick or straw looks bent

Solution 12Q:

                Here, we have to draw a diagram explaining why a straw or stick looks bent when part of it is put under water.

Step 1 of 2

Concept:

         When the light rays travel from denser to rarer medium, they bent away from the normal.

        Laws of Refraction:

The incident ray, the normal at the point of incidence and the refracted ray all lie in the same plane.

The ratio of sine of angle of incidence to the sine of angle of refraction is always  constant for the two media.