Question

Which one of the following material cannot we used to make a lens
Water Glass
Plastic
Clay

Answer 1

Answer:

clay

Explanation:

because clay is completely opaque. we can actually make lens using water if we freeze it in the correct conditions.

Answer 2

d) $\huge\tt{Clay}$

Clay cannot be used to make a lens because if the lens is made up of clay the light rays cannot pass through it.