In which of the following situations is the Doppler effect absent?

Question

BlackTom AI · Accepted Answer

The question asks about situations in which the Doppler effect is absent. Let's evaluate each option in turn.
Option 1: Neither the source nor the observer is moving relative to one another. In this scenario there is no relative motion, so the distance between them does not change and the frequency of the waves detected is the same as emitted. Therefore, no Doppler shift occurs.
Option 2: The observer is moving toward the source. When the observer moves toward the source, they encounter waves more frequently, leading to a higher observed frequency (a blue shift) due to relative motion, so the Doppler effect is present.
Option 3: The source and the observer are moving towards each other. Here there is relative motion bringing waves closer together, which increases the observed frequency; a Doppler shift occurs in this case as well.
Option 4: The source is moving away from the observer. As the source recedes, the waves are stretched and the observer receives waves less frequently, resulting in a lower observed frequency (a red shift). This is another manifestation of the Doppler effect.
In summary, any situation involving relative motion between source and observer typically yields a Doppler shift, whereas no relative motion yields no Doppler effect.

SPHY001 Practice Quiz - Unit 18 | LA058

In which of the following situations is the Doppler effect absent?

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SPHY001 Practice Quiz - Unit 18 | LA058

In which of the following situations is the Doppler effect absent?

View Explanation

Log in for full answers

Similar Questions

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More Practical Tools for Students Powered by AI Study Helper

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