Rising and setting sun appears to be reddish because _:
Correct answer: B. Scattering due to dust particles and air molecules is responsible for this effect
- A. Diffraction sends red rays to the earth at these times
- B. Scattering due to dust particles and air molecules is responsible for this effect
- C. Refraction is responsible for this effect
- D. Polarization is responsible for this effect
Explanation
During sunset and sunrise, sun is near the horizon and therefore sunlight has to travel larger distance in the atmosphere. Due to this most of the blue light (shorter wavelength) is scattered by the particles and is removed , leaving behing red light (longer wavelength) which reaches our eyes.
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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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