alleryStart learning →Which job does a telephone do when you speak into it?
AMakes your voice louder in the air
BTurns your voice into light
CStores your voice as a letter
DTurns your voice into electrical signals
Answer & Solution
Correct answer: D. Turns your voice into electrical signals
A telephone changes sound, mostly the human voice, into electrical signals that travel to the other phone.
Keep practising Transport and Communication
Browse all Transport and Communication questions for Olympiad (Class 4), or explore more General Knowledge topics.
Related questions
A town wants cleaner air. Which plan would help most?Which fuel is mostly burned by transport around the world?A vehicle is best described as what?Which place is a terminal where passengers change from one bus to another?Which one is a fixed part of transport infrastructure?Which animal is used for pulling or carrying people and loads?Walking, running and swimming are what kind of transport?Which way can carry a large amount of liquid, such as oil, over land without any vehicle?