MCQ
Ray optics is valid when characteristic dimensions are:
- AOf the same order as the wavelength of light
- BMuch smaller than the wavelength of light
- ✓Much larger than the wavelength of light
- DOf the order of 1mm
✓
Answer
Correct option: C.
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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