Podcast
Questions and Answers
What happens to the observed frequency when a sound wave source approaches a stationary observer?
What happens to the observed frequency when a sound wave source approaches a stationary observer?
In the Doppler effect formula, what does the symbol $v_s$ represent?
In the Doppler effect formula, what does the symbol $v_s$ represent?
Using the formula $f_o = \frac{f_s v}{v \pm v_s}$, which sign is used when the sound source is moving away from the observer?
Using the formula $f_o = \frac{f_s v}{v \pm v_s}$, which sign is used when the sound source is moving away from the observer?
Which of the following statements best describes the Doppler effect?
Which of the following statements best describes the Doppler effect?
Signup and view all the answers
What is the implication of observing a higher frequency sound when a source moves towards an observer?
What is the implication of observing a higher frequency sound when a source moves towards an observer?
Signup and view all the answers
Study Notes
Doppler Effect (CIE AS Level Physics 9702)
- The Doppler effect occurs when the frequency of a wave, like sound, changes depending on the relative motion between the source and the observer.
- When a sound source moves relative to a stationary observer, the observed frequency is different from the source frequency.
- The formula for calculating the observed frequency is (f_o = \frac{f_s v}{v \pm v_s}).
- (f_o) is the observed frequency.
- (f_s) is the source frequency.
- (v) is the speed of sound.
- (v_s) is the speed of the source relative to the observer.
- The plus sign (+) is used when the source moves away from the observer.
- The minus sign (-) is used when the source moves towards the observer.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the principles of the Doppler effect, a phenomenon that affects wave frequencies due to relative motion between the source and observer. Understand how to calculate the observed frequency using the relevant formula and differentiate between the scenarios of the source moving towards or away from the observer.
