Radio Waves -Multiple Choice Questions Quiz

Interactive MCQs on “Radio Waves”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: Which type of electromagnetic waves are used for long-distance communication, such as radio broadcasting and television transmission?

(a) Infrared waves
(b) Gamma rays
(c) X-rays
(d) Radio waves

Question 2: Radio waves are a type of electromagnetic radiation with wavelengths:

(a) Longer than visible light
(b) Shorter than visible light
(c) The same as visible light
(d) Completely different from visible light

Question 3: What is the speed of radio waves in a vacuum?

(a) 3 x 10^8 meters per second
(b) 3 x 10^5 meters per second
(c) 3 x 10^2 meters per second
(d) 3 x 10^10 meters per second

Question 4: Which scientist is credited with the discovery of radio waves?

(a) Thomas Edison
(b) Alexander Graham Bell
(c) Heinrich Hertz
(d) Isaac Newton

Question 5: How are radio waves produced for communication purposes?

(a) By heating metal objects
(b) By passing an electric current through a wire
(c) By burning wood
(d) By reflecting sunlight

Question 6: What is the range of frequencies typically used for radio communication?

(a) 300 to 3000 Hertz
(b) 3 to 30 Hertz
(c) 300 to 3000 Kilohertz
(d) 3 to 30 Megahertz

Question 7: Which layer of the Earth's atmosphere allows radio waves to be reflected back to the Earth, enabling long-distance communication?

(a) Troposphere
(b) Stratosphere
(c) Ionosphere
(d) Thermosphere

Question 8: What is the term for the process of combining multiple radio channels to transmit more information simultaneously?

(a) Modulation
(b) Amplification
(c) Multiplexing
(d) Demodulation

Question 9: What is the frequency range used for FM (Frequency Modulation) radio broadcasting?

(a) 88 to 108 Megahertz
(b) 540 to 1600 Kilohertz
(c) 3.5 to 30 Megahertz
(d) 535 to 1705 Kilohertz

Question 10: Which type of antennas are commonly used for broadcasting and receiving radio waves?

(a) Dish antennas
(b) Horn antennas
(c) Yagi antennas
(d) Dipole antennas