Question

A student placed a pencil in a cup of water. The pencil appears broken because light- always travels in a straight line makes the water in the glass evaporate bends when it passes through water reflects the pencil on the water's surface

Answer 1

Answer : The pencil appears broken because it bends when it passes through water.

Explanation :

When a student placed a pencil in a cup of water, the pencil appears broken. This is due to the refraction of light.

The bending of light when it moves from one medium to another is called refraction of light. When the light travels from denser to rarer medium, it gets bends away from the normal.

While when the light travels from rarer to a denser medium, it moves towards the normal.

So, the correct option is " bends when it passes through water ".

Answer 2

None of the choices makes a correct statement.  The third choice is close,
but misleading.

The pencil appears broken because light bends away from a straight line
when it crosses the boundary between air and water.