A laser beam is for locating distant objects because

it is monochromatic

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it is constant

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it is not observed

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it has small angular spread

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Solution

The correct option is D it has small angular spread
A laser beam is used for locating distant objects because it does not spread as it moves through the medium and has a very small angular spread.

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A laser beam is for locating distant objects because

The correct option is D it has small angular spreadA laser beam is used for locating distant objects because it does not spread as it moves through the medium and has a very small angular spread.

The correct option is D it has small angular spread
A laser beam is used for locating distant objects because it does not spread as it moves through the medium and has a very small angular spread.