What are two reasons why a home computer scanner requires
electromagnetic waves to operate?
A. X-rays are needed to either pass through or be absorbed by the
objects they contact.
B. Red light shines on patterns of black and white, producing a
pattern from the reflected light.
C. The charge-coupled device contains a silicon chip that releases
electroms by the photoelectric effect, producing an image.
D. Visible light needs to reflect off an object and be captured by a
charge-coupled device.