A Diffraction Grating of Width W Produces a Deviation $\theta$ In Second Order for Light of Wavelength

question 36

Multiple Choice

A diffraction grating of width W produces a deviation $\theta$ in second order for light of wavelength $\lambda$ .The total number N of slits in the grating is given by:

• A)"2W \(\lambda\) 0/sin\(\theta\)"
• B)"(W/ \(\lambda\) 0)sin\(\theta\)"
• C)" \(\lambda\) W/2sin\(\theta\)"
• D)"(W/2 \(\lambda\) )sin\(\theta\)"
• E)"2 \(\lambda\) /sin\(\theta\)"

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