Which of the following material cannot be used to make a lens ? [NCERT]
a) Plastics
(b) Water
(c) Clay
(d) Glass
Which of the following material cannot be used to make a lens ? [NCERT]
a) Plastics
(b) Water
(c) Clay
(d) Glass
Last Activity: 3 Years ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago