X-rays cannot be used in:
Correct answer: A. Radars
- A. Radars
- B. CAT scans
- C. Finding out defects in structural steels
- D. None of the above
Explanation
X-rays, having an extremely high frequency and low wavelength, would not be suitable to use in radar systems because they would penetrate the obstacle instead of reflecting and coming back.A CAT/CT scan uses X-rays and computers to produce images of a cross-section of your body. It takes pictures that show very thin "slices" of your bones, muscles, organs and blood vessels so that healthcare providers can see your body in great detail.X-rays can also be used for inspection of metals of all types and thickness ranging from minute electronic components to plates up to a half a meter thick. Cracks, porosity, holes, slag inclusions, lack of fusion and incomplete penetration, etc are effectively detected.
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Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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