Ray optics is valid, when characteristic dimensions are:
A. much smaller than the wavelength of light
B. much larger than the wavelength of light
C. of the source order as the wavelength
D. of the order of one millimetre
Answer:B
Ray optics is valid, when characteristic dimensions are:
A. much smaller than the wavelength of light B. much larger than the wavelength of light C. of the source order as the wavelength D. of the order of one millimetre