Question

Number of mirrors used in a Michelson interferometer is :
(A) 1 (B) 6 (C) 4 (D) 2​

Answer 1

Answer:

Explanation:

Option d is correct option

Answer 2

The correct option is (D). 2

The Michelson Interferometer. The Michelson interferometer consists of two mirrors, M1 and M2, arranged with a beam splitter inclined at 45° to the mirrors.

The path difference can be viewed as the difference between the mirror M1 and the  mirror M2, M2′. With the M1 and M2′ parallel, the fringes are circular and localized at infinity. With M1 and M2′ at a slight angle, the interference fringes are straight lines parallel to the equivalent intersection of the mirrors and localized approximately at the intersection. When the mirrors are only a few wavelengths apart, white light fringes appear, and can be used to determine their coincidence.