A thin layer of oil on the surface of water looks colored due to:
Correct answer: C. Interference of light
- A. Polarization of light
- B. Different elements present in the oil
- C. Interference of light
- D. The transmission of light
Explanation
Reflections from top and bottom surfaces of the oil film interfere; constructive interference for certain wavelengths yields colourful patterns dependent on film thickness.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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