Monochromatic light from a helium laser (λ=632.8 nm) is incident normally on a diffraction grating containing 6.00 x 103 lines/cm.What is the angle of the first maximum of the diffraction pattern ?

Question

Monochromatic light from a helium laser (λ=632.8 nm) is incident normally on a diffraction grating containing 6.00 x 103 lines/cm.What is the angle of the first maximum of the diffraction pattern ?

Accepted Answer

গ. 22.30°

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