CHINA: BEIJING: US DEFENCE SECRETARY COHEN VISIT UPDATE

What is the primary purpose of radio in communication?

• To transmit sound over long distances

• To store data

• To replace telephones

• To enhance visual media

How are radio waves generated?

• By reflecting light

• Through electrical oscillations

• Through gravitational forces

• By chemical reactions

Which of the following is a key component in radio transmission?

• Battery

• Microphone

• Screen

• Antenna

In which field is radio technology NOT commonly used?

• Cooking

• Navigation

• Broadcasting

• Communication

What impact has radio had on modern society?

• It has limited communication options

• It has reduced the need for electricity

• It has made visual media obsolete

• It has enhanced global connectivity