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QuestionPhysics

"Which equations are used to calculate the velocity of a wave? A. velocity = distance × time B. velocity = wavelength × frequency C. velocity = distance/time D. velocity = wavelength/frequency"
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Answer

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Step 1:
Let's solve this step by step:

Step 2:
: Understand Wave Velocity Equation

The velocity of a wave is determined by the relationship between wavelength and frequency. This is a fundamental equation in wave physics.

Step 3:
: Analyze the Wave Velocity Formula

- $$\lambda$$ (lambda) is the wavelength
The correct equation for wave velocity is: Where:

Step 4:
: Examine the Given Options

D. $$velocity = wavelength/frequency$$ - Incorrect
B. velocity = wavelength \times frequency - Correct ✓

Step 5:
: Verify the Correct Equation

The equation $$v = f \lambda$$ is equivalent to "wavelength × frequency" as stated in option B.

Final Answer

Key Insights: - Wave velocity depends on the wavelength and frequency - The units will be consistent: (meters/second) = (cycles/second) × (meters/cycle) - This equation applies to all types of waves, including sound, light, and mechanical waves