Laser is a device which can produce:
Correct answer: D. All of the above
- A. Intense beam of light
- B. Monochromatic beam of light
- C. Coherent beam of light
- D. All of the above
Explanation
A laser device can produce an intense, coherent, and monochromatic beam of light, making option (d) "All of the above" the correct choice.A laser device can produce an intense, coherent, and monochromatic beam of light, making option (d) "All of the above" the correct choice.
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About Quantum Theory and Radiation
Quantum theory treats electromagnetic radiation as packets of energy called photons, with energy proportional to frequency through E equals hf. The topic covers Planck's hypothesis, photon momentum, the photoelectric effect, threshold frequency, work function and wave particle duality, distinguishing quantised energy exchange from classical continuous radiation.
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