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Which of the following is NOT an application of interference of light? a. Operation of an...

Which of the following is NOT an application of interference of light?

a.

Operation of an electro-optic modulator.

b.

Separation of wavelengths by a diffraction grating.

c.

Imaging by a pinhole camera.

d.

The "rainbow-like" colors of an oil slick.

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Answer #1

a. Operation of an electro-optic modulator.

it changes refractive index ...which is not interference

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