Why are x-rays used in crystallography?
Correct answer: D. To perform diffraction
- A. To prevent interference
- B. To prevent diffraction
- C. To perform interference
- D. To perform diffraction
Explanation
We use X-rays in crystallography because the atoms in crystals have very small spacings. X-rays are the only electromagnetic radiations that have a small enough wavelength to study crystals. When x-rays interact with crystals, they diffract and this is why they are specifically used. Hence, D option is the correct answer.
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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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