The appearance of colours in thin soap or oil film results from:
Correct answer: D. Interference
- A. Dispersion
- B. Refraction
- C. Reflection
- D. Interference
Explanation
The colors seen in thin soap or oil films result from the interference of light waves. When light waves reflected from the top and bottom surfaces of the film interfere with each other, certain wavelengths are enhanced or canceled out, leading to the observed colors. Dispersion, refraction, and reflection all play roles in light behavior, but interference is the primary cause of the colorful effects in thin films.
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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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