In a Double-Slit Experiment,the Slit Separation Is 2

question 20

Multiple Choice

In a double-slit experiment,the slit separation is 2.0 mm,and two wavelengths,750 nm and 900 nm,illuminate the slits.A screen is placed 2.0 m from the slits.At what distance from the central maximum on the screen will a bright fringe from one pattern first coincide with a bright fringe from the other?

• A)1.5 mm
• B)3.0 mm
• C)4.5 mm
• D)6.0 mm