Monochromatic Blue Light $\lambda$ = 470 Nm)is Beamed into a Michelson Interferometer

question 6

Multiple Choice

Monochromatic blue light ( $\lambda$ = 470 nm) is beamed into a Michelson interferometer.600 fringes move by the screen when the movable mirror is moved a distance d.How far was the movable mirror moved?

• A)0.125 mm
• B)0.141 mm
• C)0.211 mm
• D)0.137 mm
• E)0.119 mm

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