Which experiment shows that wavelength of light is smaller than that of sound___________________?
Correct answer: A. Diffraction
- A. Diffraction
- B. Polarization
- C. Interference
- D. Reflection
Explanation
Diffraction depends strongly on the ratio of wavelength to the size of the opening or obstacle. Light produces much less noticeable diffraction than sound through comparable openings because its wavelength is much shorter than the wavelength of audible sound. The likely wrong choice is c, interference, because interference demonstrates wave behaviour but does not by itself provide this direct comparison of wavelengths.
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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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