Practice Phenomenon of Frequency Change - 5.1 | Theme C: Wave Behaviour | IB MYP Grade 11 Physics
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5.1 - Phenomenon of Frequency Change

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to the frequency of a sound when the source is moving towards an observer?

💡 Hint: Think about how sirens sound as they come closer.

Question 2

Easy

What happens to the frequency when the observer moves away from the stationary source?

💡 Hint: Contrast with when the observer moves towards the source.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the Doppler effect?

  • A change in the wavelength of a wave
  • A change in the frequency of a wave due to motion
  • Both wavelength and frequency remain constant

💡 Hint: Remember, it’s all about motion affecting waves!

Question 2

How does the Doppler effect apply when a source is moving away from an observer?

  • True
  • False

💡 Hint: Think of how an ambulance sounds when it drives past.

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Challenge Problems

Push your limits with challenges.

Question 1

A stationary source of music produces a frequency of 440 Hz. Calculate the frequency heard by an observer running towards the source at 10 m/s when the speed of sound in air is 340 m/s.

💡 Hint: Substituting values will give you a new frequency!

Question 2

A source moving away at a speed of 5 m/s emits a frequency of 1000 Hz. What frequency is detected by a stationary observer if the speed of sound is 340 m/s?

💡 Hint: Remember to use the formula for a source moving away!

Challenge and get performance evaluation