The gradual change of light, by which we receive light at dawn or after sunset, is due to _:
Correct answer: C. Irregular refraction
- A. Specular refraction
- B. Regular refraction
- C. Irregular refraction
- D. None of these
Explanation
Irregular refraction is the correct answer because it explains the non-uniform change in direction of light passing through a medium with varying optical properties, resulting in the gradual change of light observed during dawn or after sunset. The other options, specular refraction and regular refraction, do not account for this specific phenomenon and are therefore incorrect.
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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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