Q494
In mirrors the back surface is coated with a thin layer of :
A.
Mercury
B.
Silver
AnswerC.
Red oxide
D.
Silver nitrate
Answer: Option B
Solution
Answer: Option B
Solution:
In a spherical mirror, one of the two curved surfaces is coated with a thin layer of silver followed by a coating of red lead oxide paint. Thus, one side of the spherical mirror is opaque and the other side is a highly polished reflecting surface.