The Spacing Between Adjacent Slits on a Diffraction Grating Is $\lambda$

question 21

Multiple Choice

The spacing between adjacent slits on a diffraction grating is 3 $\lambda$ .The deviation $\theta$ of the first order diffracted beam is given by:

• A)sin(\(\theta\)/2)= 1/3
• B)sin(\(\theta\)/3)= 2/3
• C)sin(\(\theta\))= 1/3
• D)tan(\(\theta\)/2)= 1/3
• E)tan(\(\theta\))= 2/3

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