Quiz  /  Radio Receivers Class 10 MCQ Questions With Answers

  • 1. 
    Radio waves have a shorter wavelength and higher frequency than infrared rays.

  • True
  • False

  • 2. 
    In which of the following means is radio waves generated and detected?

  • A battery and a microscope
  • A light detector
  • A microphone and Z104 detector
  • A spark-gap transmitters and receivers

  • 3. 
    Heinrich Hertz was a famous physicist widely known for his discovery of what?

  • Electromagnetic waves
  • Gravity
  • Magnetism
  • Photons

  • 4. 
    The following are known scientists. Who among them first predicted that radio waves existed

  • Galileo Galilee
  • Guglielmo Marconi
  • Isaac Newton
  • James Clerk Maxwell

  • 5. 
    Are radio waves electromagnetic waves

  • True
  • False

  • 6. 
    Which of the following sparks can produce radio waves?

  • High voltage sparks
  • Low voltage sparks
  • Medium voltage sparks
  • Nominal voltage sparks

  • 7. 
    Based on the electromagnetic spectrum, which of the following do radio waves have?

  • High frequency and long wavelength
  • High frequency and short wavelength
  • Low frequency and long wavelength
  • Low frequency and short wavelength

  • 8. 
    Radio waves use ultra-high frequency band to deliver which of the following?

  • Email
  • Music
  • Signal
  • Text Message

  • 9. 
    Which theory was confirmed by the discovery of Heinrich Hertz?

  • Galilean Relativity
  • Maxwell’s Electromagnetic Theory
  • Newtonian Mechanics
  • Special Relativity

  • 10. 
    Janus has to research and give a presentation to his class on among the different types of electromagnetic waves. Which of the following would be impossible for him to work on?

  • Infrared
  • Microwave
  • Radio wave
  • Ultrasound

  • 11. 
    In what part of the transmitter did Hertz see electrical sparks?

  • Battery
  • Conductor
  • Spark-gap
  • Switch

  • 12. 
    Which of the following is the frequency range of radio waves?

  • 300 kHz – 300 GHz
  • 300 GHz - 3 x 1013 Hz
  • 3 x 1013 Hz - 3 x 1015 Hz
  • 3 GHz - 3 x 1021 Hz

  • 13. 
    Which of the following is the SI unit for frequency?

  • Hertz
  • Ampere
  • Minute
  • Kilometer

  • 14. 
    Hertz (Hz) is an SI unit for which of the following measurement?

  • distance
  • frequency
  • mass
  • time

  • 15. 
    What are radio waves used for on earth?

  • wireless transmission of sound messages
  • information for communication
  • Both A & B
  • None of these

  • 16. 
    It is an intense burst of radio-frequency energy lasting for a fraction of a second.

  • Microwave
  • Radio pulse
  • Sound
  • Ultrasound

  • 17. 
    What is the frequency of a radio wave?

  • low as 1 Hz and as high as 2 gigahertz
  • low as 3 Hz and as high as 6 gigahertz
  • low as 3 Hz and as high as 1 gigahertz

  • 18. 
    How do radio waves work?

  • A radio works by converting a specific wavelength into vibrations, generating sound from the speakers.
  • They work by going trough and playing sound
  • They work by going into the cord and play sound
  • Radio waves work by converting vibration to speakers

  • 19. 
    What are the properties of a radio wave?

  • frequency
  • amplitude
  • protons
  • Both A & B

  • 20. 
    Which of the following materials allows the flow of radio waves?

  • conductor
  • inductor
  • insulator
  • resistor

  • 21. 
    Which one uses radio waves?

  • Notebook
  • Television
  • Pencil
  • Floor

  • 22. 
    Can radio waves damage your DNA and even lead to cancer?

  • False
  • True
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