Sensitivity and frequency response (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the unit for sound intensity?
What is the unit for sound intensity?
What is the threshold of hearing at 1 kHz?
What is the threshold of hearing at 1 kHz?
W m
What is the threshold of pain for sound intensity?
What is the threshold of pain for sound intensity?
W m
How does sound intensity change with distance from a point source?
How does sound intensity change with distance from a point source?
Follows inverse square law
What does a 10 dB increase represent in terms of intensity?
What does a 10 dB increase represent in terms of intensity?
Tenfold increase
What formula calculates relative intensity level in decibels?
What formula calculates relative intensity level in decibels?
What sound level corresponds to normal conversation?
What sound level corresponds to normal conversation?
60 dB
At what frequency range is the human ear most sensitive?
At what frequency range is the human ear most sensitive?
2 kHz to 5 kHz
What is the purpose of the A-weighting filter (dBA)?
What is the purpose of the A-weighting filter (dBA)?
Replicate human hearing sensitivity
A sound has intensity W m. What is its dB level?
A sound has intensity W m. What is its dB level?
20 dB
