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A laser beam is used for carrying our surgery because it

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A laser beam is used for carrying our surgery because it
A. is highly monochromatic
B. is highly coherent
C. can be sharply focussed
D. is highly directional
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Correct Answer - C
( c) LASER is the short form of Light Amplification Stimulated Emission of Radiation. It is a device by which an intense, monochromatic, collimated and highly coherent light beam can be obtained. Laser beam is used in surgery because it can be sharply focussed.
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