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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class12  >>  Electromagnetic Waves
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Laser beams are used to measure long distances because:

$\begin {array} {1 1} (a)\;They\: are\: monochromatic & \quad (b)\;They \: are\: polarized \\ (c)\;They \: are \: coherent & \quad (d)\;They\:  have\:  high\:  degree\:  of\:  parallelism \end {array}$

 

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