Question

Which are uses of lasers? Check all that apply.

1 scanning a bar code on a price tag for a shirt
2 creating a magnified image of the moon
3 cutting an iron bar into two pieces
4 reshaping a cornea to improve vision
5 making a leaf appear larger so its veins are visible

Answer 1

A) scanning barcodes

D) cutting through metals, ceramics, plastics, and cloth

E) correcting vision problems