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Mini-Quiz: Summary of Doppler Effect Equations

by Ron Kurtus

Take this Mini-Quiz to check your understanding of the lesson material.

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1. What is the general Doppler Effect equation for wavelength?

λ_O = λ_S(c − v_S)/(c − v_O)

λ_O = λ_S(c + v_S)/(c + v_O)

λ_S = λ_O(c − v_S)/(c − v_O)

2. What is the general Doppler Effect equation for the change in frequency?

Δf = f_S(v_O + v_S)(c + v_S)

Δf = f_S(v_O − v_S)/(c − v_S)

Δf = f_S(v_O − v_S)/(c + v_S)

3. What is the velocity equation with respect to freqeuncy when reflecting a wave off an object moving opposite the x-direction?

v_R = −cΔf/(f_S + f_O)

v_R = cΔf/(f_S − f_O)

v_R = −cΔf/(f_S − f_O)

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

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Physics topics

Mini-Quiz: Summary of Doppler Effect Equations

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Wave Motion topics

• Overview of Wave Motion

Basics

• Units of Frequencies and Wavelengths
• Waves and Obstacles
• Waveform Noise
• Pulse Waves

Doppler Effect

• Doppler Effect for Waveforms
• Conventions for Doppler Effect Equations
• Summary of Doppler Effect Equations
• Derivation of Wavelength Equations
• Derivation of Frequency Equations
• Derivation of Velocity Equations

Sound waves

• Overview of Sound Waves

Electromagnetic waves

• Overview of Electromagnetic Waves

Also see

• Physics Survey Results
• Physical Science
• Astronomy
• Chemistry
• Algebra

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