Laser beam can be used to generate three-dimensional image of object in a process called:
Correct answer: C. Holography
- A. Computed technology
- B. Computed tomography
- C. Holography
- D. Computerized axial tomography
Explanation
Holography is a technique based on wave interference to record and form three-dimensional images. Lasers offer a practical way to produce sharp holographic images because of their monochromatic and coherent light for pronounced interference patterns.
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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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