Light from a Laser $\lambda$ = 640 Nm) Passes Through a Diffraction Grating and Spreads

question 31

Multiple Choice

Light from a laser ( $\lambda$ = 640 nm) passes through a diffraction grating and spreads out into three beams as shown in the figure. Determine the spacing between the slits of the grating.

• A)240 nm
• B)410 nm
• C)500 nm
• D)680 nm
• E)800 nm

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