A Multiple Slit Diffraction Grating Has a Slit Separation of 2.00

question 59

Multiple Choice

A multiple slit diffraction grating has a slit separation of 2.00 × 10−⁶ m.Find the wavelength of the monochromatic light that will have its second order (m = 2) bright fringe diffracted through an angle of 43.4°.(1 nm = 10−⁹ m)

• A) 616 nm
• B) 500 nm
• C) 687 nm
• D) 120 nm

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