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Huygens' Principle

Ray optics is...

Question

Ray optics is valid when characteristic dimensions are

A

of the same order as the wavelength of light

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B

much smaller than the wavelength of light

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C

much larger than the wavelength of light

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D

of the order of 1 mm

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Solution

The correct option is A much larger than the wavelength of light
Ray optics is valid when characteristics dimensions are larger than the wavelength of the light, so that rectilinear property of light can be used.

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