How Much Do You Know About Mechanical Waves?

15 Questions | Total Attempts: 106

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Wave Quizzes & Trivia

A sound wave is an example of a mechanical wave and these types of waves are an oscillation of matter and therefore transfer energy through a medium and not through a vacuum. Just how much do you know about mechanical waves? Take up the quiz below and get to test your level of understanding on the topic. All the best!


Questions and Answers
  • 1. 
    A sound source moves away from a stationary observer.  According to the Doppler Effect, the frequency heard by the observer is
    • A. 

      Lower than the source

    • B. 

      Higher than the source

    • C. 

      The same as the source

    • D. 

      Equal to zero

  • 2. 
    Fiber optics depends on the phenomenon of
    • A. 

      Total internal reflection

    • B. 

      Diffuse reflection

    • C. 

      Polarization

    • D. 

      Dispersion

  • 3. 
    When the mass of a simple pendulum is tripled, the time required for one complete period
    • A. 

      Does not change

    • B. 

      Triples

    • C. 

      Decreases to 1/3 its original value

    • D. 

      Increases to 4/3 its original value

  • 4. 
    The speed of light is fastest in
    • A. 

      A vacuum

    • B. 

      Water

    • C. 

      Glass

    • D. 

      Diamond

  • 5. 
    When light travels from a medium with a higher index of refraction to a medium with a lower index of refraction, the refracted angle
    • A. 

      Is less than the incident angle

    • B. 

      Is greater than the incident angle

    • C. 

      Does not change

    • D. 

      There is no refraction

  • 6. 
    An object is placed 25 cm away from a plane mirror.  The distance from the object to the image is
    • A. 

      25 cm

    • B. 

      50 cm

    • C. 

      0 cm

    • D. 

      10 cm

  • 7. 
    If the frequency of a wave is doubled, the period
    • A. 

      Doubles

    • B. 

      Halves

    • C. 

      Stays the same

    • D. 

      Decreases to 1/4 the original value

  • 8. 
    A light ray parallel to the optic axis hits a converging lens.  After refraction, the ray
    • A. 

      Passes through the focal point on the opposite side of the lens

    • B. 

      Passes through the focal point on the same side of the lens

    • C. 

      Continues its parallel path

    • D. 

      Gets reflected back upon itself

  • 9. 
    A light beam is incident on a mirror at an angle of 35 degrees.  What is the angle of reflection?
    • A. 

      35 degrees

    • B. 

      55 degrees

    • C. 

      45 degrees

    • D. 

      90 degrees

  • 10. 
    Sonar uses what type of sound waves?
    • A. 

      Infrasonic

    • B. 

      Audible sounds

    • C. 

      Ultrasonic

    • D. 

      Subsonic

  • 11. 
    The wavelength of a wave on a rope is 3.5 meters.  If it takes 2 seconds for the wave to complete 1 cycle, what is the wave speed?
    • A. 

      0.57 m/s

    • B. 

      1.75 m/s

    • C. 

      3.25 m/s

    • D. 

      7.0 m/s

  • 12. 
    A beam of light in polystyrene is incident on water at an angle of 42 degrees.  What is the angle of refraction?
    • A. 

      48.6 degrees

    • B. 

      36.7 degrees

    • C. 

      53.1 degrees

    • D. 

      42.7 degrees

  • 13. 
    What is the period of a 2 kg mass oscillating on a spring with a spring constant of 175 N/m?
    • A. 

      0.36 seconds

    • B. 

      0.53 seconds

    • C. 

      0.67 seconds

    • D. 

      0.79 seconds

  • 14. 
    An object is placed 1.5 meters away from a convex mirror with a focal length of  -5 meters.  Where is the image located?
    • A. 

      2.14 meters in front of the mirror

    • B. 

      2.14 meters behind the mirror

    • C. 

      1.15 meters in front of the mirror

    • D. 

      1.15 meters behind the mirror

  • 15. 
    An object is placed 55 centimeters away from a converging lens with a focal length of 30 centimeters.  What are the characteristics of the image?
    • A. 

      Virtual, upright, magnified

    • B. 

      Virtual, inverted, reduced

    • C. 

      Real, inverted, magnified

    • D. 

      Real, upright, reduced

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