Menu

The Doppler Effect Practice Questions

Please provide a rating, it takes seconds and helps us to keep this resource free for all to use

[ 3 Votes ]

The following physics revision questions are provided in support of the physics tutorial on The Doppler Effect. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the The Doppler Effect tutorials. The The Doppler Effect calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

Not sure on some or part of the The Doppler Effect questions? Review the tutorials and learning material for The Doppler Effect

Optics Learning Material
Tutorial IDTitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
12.7The Doppler Effect

Physics Revision Questions for The Doppler Effect

1. An ambulance car normally emits a sound wave of frequency 1500 Hz. A girl hears a 1560 Hz siren from such a car. How is the ambulance car moving? Take the speed of light in air equal to 343 m/s.

  1. At 13.2 m/s away from the girl
  2. At 13.2 m/s towards the girl
  3. At 13.7 m/s away from the girl
  4. At 13.7 m/s towards the girl

Correct Answer: B

2. Two identical airplanes are approaching each other at equal speeds. Each of them emits a sound of frequency equal to 2000 Hz when at rest. What is the flying speed of each airplane if pilots hear a 4000 Hz sound wave emitted by the other airplane? Take the speed of sound in air equal to 343 m/s.

  1. 57.7 m/s
  2. 343 m/s
  3. 228.7 m/s
  4. 114.3 m/s

Correct Answer: D

3. A star is moving away from our galaxy at 0.2 × c where c = 3 × 108 m/s is the speed of light in vacuum. As a result, the frequency of light it emits appears to be 4.3 × 1014 Hz (red light). What is the frequency of the original light emitted by the star?

  1. 3.51 × 1014 Hz
  2. 2.90 × 1014 Hz
  3. 6.525 × 1014 Hz
  4. 5.27 × 1014 Hz

Correct Answer: D

Whats next?

Enjoy the "The Doppler Effect" practice questions? People who liked the "The Doppler Effect" practice questions found the following resources useful:

  1. Practice Questions Feedback. Helps other - Leave a rating for this practice questions (see below)
  2. Optics Physics tutorial: The Doppler Effect. Read the The Doppler Effect physics tutorial and build your physics knowledge of Optics
  3. Optics Revision Notes: The Doppler Effect. Print the notes so you can revise the key points covered in the physics tutorial for The Doppler Effect
  4. Check your calculations for Optics questions with our excellent Optics calculators which contain full equations and calculations clearly displayed line by line. See the Optics Calculators by iCalculator™ below.
  5. Continuing learning optics - read our next physics tutorial: Mirrors. Equation of Curved Mirrors. Image Formation in Plane and Curved Mirrors

Help others Learning Physics just like you

Please provide a rating, it takes seconds and helps us to keep this resource free for all to use

[ 3 Votes ]

We hope you found this Physics tutorial "The Doppler Effect" useful. If you did it would be great if you could spare the time to rate this physics tutorial (simply click on the number of stars that match your assessment of this physics learning aide) and/or share on social media, this helps us identify popular tutorials and calculators and expand our free learning resources to support our users around the world have free access to expand their knowledge of physics and other disciplines.

Optics Calculators by iCalculator™