Sound intensity: What is the correct physical unit for intensity of sound? Recall that intensity is acoustic power transmitted per unit area, not a subjective level measure. Choose the correct option.

Q: Sound intensity: What is the correct physical unit for intensity of sound? Recall that intensity is acoustic power transmitted per unit area, not a subjective level measure. Choose the correct option.

Concept & formula Intensity I = Power/Area ⇒ SI unit W/m². Clarification Decibel (dB) is a logarithmic level (ratio) unit for intensity or pressure levels, not the base SI unit of intensity itself. Final Answer Watt per square metre (W/m²)

Difficulty: Easy

Joule (J)
Pascal (N/m²)
Watt per square metre (W/m²)
Decibel (dB)

Correct Answer: Watt per square metre (W/m²)

Explanation:

Concept & formula
Intensity I = Power/Area ⇒ SI unit W/m².

Clarification
Decibel (dB) is a logarithmic level (ratio) unit for intensity or pressure levels, not the base SI unit of intensity itself.

Final Answer
Watt per square metre (W/m²)

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