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Quiz

Doppler Effect

RIAZ OMAR 5 Fragen

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Fragen in diesem Quiz (5)

  1. 1A source of sound approaches a stationary listener. Which ONE of the following will occur?
    1. AThe amplitude of the observed sound wave will be more than the amplitude of the sound wave emitted by the source.
    2. BThe wavelength of the observed sound wave will be greater than the wavelength of the sound wave emitted by the source.
    3. CThe frequency of the observed sound wave will be more than the frequency of the sound wave emitted by the source.
    4. DThe speed of the observed sound wave will be greater than the speed of the sound wave emitted by the source.
  2. 2An observer moves away from a stationary source. The pitch heard by the
    observer appears to change because the …
    1. Aloudness of the source appears to increase.
    2. Bfrequency of the source appears to increase.
    3. Cfrequency of the source appears to decrease.
    4. Dwavelength of the source appears to decrease.
  3. 3An aircraft controller is standing on the tarmac of the runway of air field. A small plane moves down the runway. The noise of the engine , as heard by the pilot ,has frequency of 1,17 times the frequency that the controller hears.
    Which statement best describes the movement of the plane relative to the controller?
    1. AThe plane is moving towards the controller.
    2. BThe plane is moving away from the controller.
    3. CThe plane is passing in front of the controller
    4. DOne cannot determine the movement of the plane relative to the controller.
  4. 4An astronomer observes certain spectral lines obtained from light from a bright star. The spectral line of one particular colour is found to have shifted towards the blue end of the visible spectrum.This suggested that the star is …
    1. AStationary relative to the earth.
    2. BMoving away from the earth
    3. CMoving towards the earth.
    4. DBecoming brighter.
  5. 5Which ONE of the following CANNOT be explained using the Doppler effect?
    1. AEmission of electrons from a metal surface
    2. B'Flow meters' used in hospitals
    3. CRed spectral lines from distant stars being shifted
    4. DObserved frequency of light from moving bodies being higher than expected

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Beschreibung
Grade 12 Physical Sciences Quiz am Doppler Effect, erstellt von RIAZ OMAR am 26/02/2018.
Sprache
English
Aufrufe
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