Soap film in sunlight appears colored due to:
Correct answer: D. Interference of light
- A. Dispersion of light
- B. Diffraction of light
- C. Scattering of light
- D. Interference of light
Explanation
Varying film thickness causes wavelength‑dependent constructive/destructive interference of reflected light, producing iridescent colours.
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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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