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Question

Identify the incorrect option from the following.


  1. Source of sound - Normal breathing , Range in dB - 10 dB , Effect produced on the human ear - Low volume

  2. Source of sound - Busy traffic , Range in dB - 30 dB , Effect produced on the human ear - Noisy

  3. Source of sound - Teacher's voice , Range in dB - 40 - 50 dB , Effect produced on the human ear - Normal sound

  4. Source of sound - Jet planes , Range in dB - Above 150 dB , Effect produced on the human ear - Irritating sound


Solution

The correct option is B

Source of sound - Busy traffic , Range in dB - 30 dB , Effect produced on the human ear - Noisy


Busy traffic has decibel levels to the level of 90 dB.

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