Concept explainers
What does NOT occur with the Doppler effect are changes in
(a) frequency due to motion.
(b) the speed of the sound due to motion.
(c) Both of these.
(d) Neither of these.
The correct option for the statement “What does NOT occur with the Doppler effect are changes in”.
Answer to Problem 9RAT
The correct option for the statement “What does NOT occur with the Doppler effect are changes in” is option (d).
Explanation of Solution
The change in frequency due to the motion of the source or receiver is called the Doppler effect. This effect applies to all kinds of waves. When a source of sound approaches a person, the pitch will be higher than the normal. The wave crests reach your ear more frequently. When the source moves away from a person, the pitch will drop. Then the crests of the wave hit your ear less frequently.
Doppler effect also occurs when the receiver moves. It is the resultant of the relative motion between a wave source as well as a receiver.
Conclusion:
Therefore, correct option for the statement “What does NOT occur with the Doppler effect are changes in” is option (d).
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