X-rays are used to investigate:
Correct answer: A. Crystals
- A. Crystals
- B. Molecules
- C. Ions
- D. Electrons
Explanation
X-rays are commonly used to investigate the structure of crystals. This is known as X-ray crystallography. When X-rays interact with a crystal lattice, they undergo diffraction patterns that can be analyzed to determine the arrangement of atoms within the crystal. This technique has been crucial in elucidating the structures of many important molecules, including proteins and complex organic compounds.
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About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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