Crystals of a material can behave as_________________?
Correct answer: C. Diffraction grating
- A. Convex lens
- B. Interferometer
- C. Diffraction grating
- D. Concave
Explanation
The regularly spaced atomic planes in a crystal scatter waves in definite directions, so a crystal acts like a three-dimensional diffraction grating. Students may choose an interferometer because interference occurs in crystal diffraction, but an interferometer is an instrument using controlled beam paths, not the crystal itself.
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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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