Above______ the noise becomes physically painful to human ears.

Question

Question

This question was previously asked in

MP Police Constable 2023 Official Paper (Held On: 01 Sept, 2023 Shift 2)

Answer 1

The correct answer is 80 dB.

Key Points

Noise levels above 80 decibels (dB) can cause physical pain or discomfort to human ears.
Prolonged exposure to noise levels above 80 dB may lead to temporary or permanent hearing damage.
Every 10 dB increase in sound intensity represents a tenfold increase in the energy level, making higher decibels significantly more impactful.
Common sources of noise above 80 dB include heavy traffic, construction sites, and loud music concerts.
The World Health Organization (WHO) recommends keeping environmental noise levels below 70 dB to prevent health impacts.

Additional Information

Decibel (dB): A unit used to measure the intensity of sound, based on a logarithmic scale.
Hearing Threshold: Sounds under 30 dB (like whispers) are considered soft, while levels above 80 dB can be harmful to the ear.
Occupational Safety: According to guidelines by organizations like OSHA, exposure to noise levels above 85 dB for prolonged periods requires the use of hearing protection devices.
Noise-Induced Hearing Loss (NIHL): A permanent condition caused by prolonged exposure to high noise levels, often preventable with proper precautions.
Common Noise Sources and Levels:
- Normal conversation: ~60 dB
- Busy traffic: ~80 dB
- Rock concert: ~120 dB
- Jet engine at takeoff: ~140 dB