Question

Human ears can pick up sounds ranging in amplitude (loudness) from $10dB$to $180dB$. A sound is considered to be normal if it is between $50dB$to $60dB$Sounds above $80dB$ are painful and cause various health problems.

Which of the following sounds humans can hear, comfortably?

• A. $95dB$
• B. $60dB$
• C. $100dB$
• D. $180dB$

Answer 1

The correct option is B

$60dB$

1. Human ear can pick up the sound of the amplitude of the order of $10dB$to $180dB$
2. Sound with an amplitude of $50dB$ to $60dB$can be heard comfortably.
3. Sound with amplitude greater than $80dB$can cause very health issues like hypertension, headache etc.
4. All the amplitude values given in the options are audible but only the sound of amplitude $60dB$ can be heard comfortably.

Hence, option (B) is correct.