A Young's Double Slit Has a Slit Separation of 1

question 42

Multiple Choice

A Young's double slit has a slit separation of 1.65 × 10−⁵ m on which a monochromatic light beam is directed.The resultant bright fringes on a screen 1.10 m from the double slit are separated by 2.25 × 10−² m.What is the wavelength of this beam? (1 nm = 10−⁹ m)

• A)6.90 nm
• B)205 nm
• C)337 nm
• D)338 nm
• E)408 nm

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