What is the spacing between adjacent grooves in the grating

Reference no: EM13550788

A helium-neon laser (? = 632.8 nm) is used to calibrate a diffraction grating. If the first-order maximum occurs at 20.0°, what is the spacing between adjacent grooves in the grating? (In this problem, assume that the light is incident normally on the grating.)

_____ ?m

Reference no: EM13550788

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