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Radio Quiz: questions and answers

Radio Quiz: questions and answers

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Free online printable quiz with multiple-choice questions (MCQ) without registration.

Radio is one of the types of social media. It is clearly unknown who was the first to invent the radio technologyю What do you know about it?

Radio quiz contains interesting questions with multiple choice answers about the topic.

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Found a mistake? Select it and press Ctrl+Enter

For each question choose one of the multiple answers then click done to check your results.

1. What is a transmitter?

An electronic device which produces radio waves with an antenna

An electroacoustic transducer which converts an electrical audio signal into a corresponding sound

A transducer that converts sound into an electrical signal

2. What is the name of the electrical device which receives radio waves and converts the information carried by them to a usable form?

A microphone

A radio receiver

An antenna

3. When did James Clerk Maxwell show mathematically that electromagnetic waves could propagate through free space?

1875

1864

1846

4. What is the name given to the phenomena that occur in an electric circuit at a particular resonant frequency when the impedances or admittances of circuit elements cancel each other?

Electroluminescence

Electrical resonance

Static electricity

5. What is refraction?

The change in direction of a wave passing from one medium to another or from a gradual change in the medium

The change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated

The bending of waves around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle

6. RADAR is the acronym for:

Radio detection and ranging

Radiation detection and ranging

Rats detection and ranging

7. Who was able to demonstrate the existence of electromagnetic waves in an experiment confirming Maxwell's theory of electromagnetism?

Heinrich Hertz

Édouard Branly

Lee de Forest

8. What is the name of the oven that uses intense radio waves to heat food?

Earth oven

Ceramic oven

Microwave oven

9. Who operates the Global Positioning System (GPS)?

Royal Air Force

United States Air Force

Luftwaffe

10. What is the photon energy of radio waves?

1.24 meV - 1.7 eV

12.4 feV - 1.24 meV

3.1 eV to 124 eV

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