You have used a diffraction grating to determine the wavelength of light. Choose

Question

You have used a diffraction grating to determine the wavelength of light. Choose all that are correct about a diffraction grating.

A. If the size of the slit opeing of diffraction grating is much larger than the wavelength of light, the diffraction pattern becomes stronger (stronger contrast between maxima and minima).

B. Diffraction grating produces interference pattern only for transmitted light (light passes through), but does not work for reflected light (light reflected off the surface of the diffraction grating).

C. Diffraction angle will be different if the slit-to-slit distance of the diffraction grating is different.

D. For a given diffraction grating, the wavelength of an incident light can be determined from the diffraction angle.

Explanation / Answer

B. Diffraction grating produces interference pattern only for transmitted light (light passes through), but does not work for reflected light (light reflected off the surface of the diffraction grating).

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