Which one of the following materials
Question.
Which one of the following materials cannot be used to make a lens ?
(a) Water
(b) Glass
(c) Plastic
(d) Clay
Which one of the following materials cannot be used to make a lens ?
(a) Water
(b) Glass
(c) Plastic
(d) Clay
solution:
(d) Clay is not transparent, therefore it cannot be used for making lens.
(d) Clay is not transparent, therefore it cannot be used for making lens.