how are amplitude modulation and frequency modulation techniques similar?\no both are used by cell phones to…

how are amplitude modulation and frequency modulation techniques similar?\no both are used by cell phones to produce images.\no both transform electrical signals into sound waves.\no both modify the pulse of a carrier wave.\no both are used by radio stations to transmit sound.

how are amplitude modulation and frequency modulation techniques similar?\no both are used by cell phones to produce images.\no both transform electrical signals into sound waves.\no both modify the pulse of a carrier wave.\no both are used by radio stations to transmit sound.

Answer

Brief Explanations:

Amplitude modulation (AM) and frequency modulation (FM) are modulation techniques used in radio - frequency communication. Radio stations use both AM and FM to transmit sound. Cell phones don't use them for image production. They don't directly transform electrical signals into sound waves. They modify the carrier wave's amplitude or frequency, not the pulse.

Answer:

D. Both are used by radio stations to transmit sound.