Laser light is:
Correct answer: D. All of these
- A. Monochromatic
- B. Intense
- C. Coherent
- D. All of these
Explanation
The full form of laser in literal is Light amplification by stimulated emission of radiation. Lasers produce intense and focused beams of light through a process called stimulated emission. All of these are the features of a laser and without these features a laser would not be formed. These three characteristics differentiate Laser from other light sources and makes it useful.
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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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