If the movable mirror in the Michelson's interferometer in air (refractive index = 1) is moved by a distance △△ x = 325 ?μ causing a number of fringe-crossing (n) as 1000, wavelength ( ?λ ) of laser used is _____________ [Hint : Use a formula n ?λ = 2( △△ x) Group of answer choices 650 nm 650 ?μ m 325 ?μ m 325 nm
If the movable mirror in the Michelson's interferometer in air (refractive index = 1) is moved by a distance △△ x = 325 ?μ causing a number of fringe-crossing (n) as 1000, wavelength ( ?λ ) of laser used is _____________ [Hint : Use a formula n ?λ = 2( △△ x) Group of answer choices 650 nm 650 ?μ m 325 ?μ m 325 nm
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If the movable mirror in the Michelson's interferometer in air (refractive index = 1) is moved by a distance
△△
x = 325
?μ
causing a number of fringe-crossing (n) as 1000, wavelength (
?λ
) of laser used is _____________ [Hint : Use a formula n
?λ
= 2(
△△
x)
Group of answer choices
650 nm
650
?μ
m
325
?μ
m
325 nm
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