Thursday 4th April 2024
    Difficulty: Very hard

    Decibels (Quiz #503)

    Photo by <a href="https://unsplash.com/@jasonrosewell?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Jason Rosewell</a>
    Photo by Jason Rosewell (Unsplash)

    The decibel (symbol: dB) is a relative unit used for a wide variety of measurements in science and engineering, most prominently for sound power in acoustics. 

    1. How is a decibel related to a bel?

    2. If the noise intensity from an electric drill is 100 dB when you are 10 metres away from it, what will it be when you are 20 metres away from it?

    3. How much louder is 80 dB than 70 dB?

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