10. Choose the correct statement relating to a laser beam:
(A) It is highly monochromatic.
(B) It has high angular divergence,
(C) It is produced by spontaneous emission.
(D) All are correct.
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Answer:
it is highly monochromatic
option number A
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Laser is highly monochromatic.
- A laser is highly monochromatic because it produces a beam of very intense light. It is monochromatic, directional and coherent monochromatic in nature while a white light is not.
- Laser is produced by stimulated emission and not by spontaneous one.
- Lasers do not have high angular diversion as they are perfectly parallel and would not spread out in different directions.
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