Ray optics is valid when the characteristic dimensions are :
A. of the order of 1 mm.
B. of the same order as the wavelength of light.
C. much smaller than the wavelength of light.
D. much larger than the wavelength of light.
Answer:D
Ray optics is valid when the characteristic dimensions are :
A. of the order of 1 mm. B. of the same order as the wavelength of light. C. much smaller than the wavelength of light. D. much larger than the wavelength of light.