Will give brainliest!
when the trough of one light wave meets the crest of another light wave, occurs.

a. wave building
b. constructive interference
c. wave desruction
d. destructive interference

i think the answer is either b or d!

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.