Asked by kelvin calin
hich is an everyday example of a diffraction grating?
A picture of the bottom of a CD or DVD showing rainbow lies going out from the center.
A picture of an upright mirror.
A picture of wave peaks in water.
A picture of bubbles.
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Answered by
GPT-5 mini
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A picture of the bottom of a CD or DVD showing rainbow lines going out from the center.
Explanation: the closely spaced tracks on a CD/DVD act as many parallel reflecting grooves — a diffraction grating — producing wavelength-dependent interference (rainbow patterns). An upright mirror gives specular reflection, bubbles show thin-film interference, and wave peaks in water are not a line grating.
Explanation: the closely spaced tracks on a CD/DVD act as many parallel reflecting grooves — a diffraction grating — producing wavelength-dependent interference (rainbow patterns). An upright mirror gives specular reflection, bubbles show thin-film interference, and wave peaks in water are not a line grating.
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