The blue tint of a coated camera lens is largely caused by what effects?
A)diffraction
B)refraction
C)polarization
D)interference

Question

Quizplus · Accepted Answer

The blue tint of a coated camera lens is primarily due to interference effects. Thin-film interference occurs when light waves reflected off the top and bottom surfaces of the lens coating interfere with each other, enhancing some wavelengths of light and reducing others, which can give the lens a colorful appearance, often blue.

The Blue Tint of a Coated Camera Lens Is Largely