Write two features of LASER?
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laser light is monochromatic, directional, and coherent.
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Two features of laser are
It has one colour only, or, it is monochromatic.
It goes in one direction only, unlike sun or candle which emit light in all directions.
It has one colour only, or, it is monochromatic.
It goes in one direction only, unlike sun or candle which emit light in all directions.
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