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At what position should a point source of lightbe placed in front of a concave mirror to obtainparallel beam of light? Draw a diagram to support 2your answer. Name a device where this propertyis used. |
Answer» <p>Whenapoint light sourceisplacedat the focus ofconcave mirrorthen it alllightrays after reflection throughmirror willbecome parallel to the principal axis.</p> | |