Identify the correct sequence of average noise levels in increasing order of their magnitude from different sources.
(A) City street corner
(B) Conversational speech
(C) Highway
(D) Aircraft noise during take off
(E) Typical office
Choose the correct answer from the options given below:

Correct option is B

The correct sequence in increasing order of average noise levels is: Typical office (E) < Conversational speech (B) < City street corner (A) < Highway (C) < Aircraft noise during takeoff (D). This sequence is based on the typical noise levels measured in decibels (dB) for each of these sources.
1. Typical Office (E): Noise levels in a typical office environment generally range from 40 to 50 dB. Offices are designed to have a controlled sound environment, with lower noise levels that allow for concentration and productivity without excessive background noise.
2. Conversational Speech (B): Normal conversational speech occurs at about 60 dB. This level is considered moderate and is generally comfortable for human hearing without causing disturbance or ear strain.
3. City Street Corner (A): Noise levels at a city street corner, influenced by vehicles, pedestrian movement, and urban activity, are typically around 70-80 dB. This level can vary depending on traffic density and the specific location within the city, but it is higher than normal conversation and can be intrusive over prolonged exposure.
4. Highway (C): Noise levels on a highway, with fast-moving and heavy traffic, can range between 80-90 dB. This level is significantly louder due to continuous traffic flow and engine noise, particularly from trucks and motorcycles. Prolonged exposure to this level may cause hearing discomfort or damage.
5. Aircraft Noise During Takeoff (D): Aircraft noise during takeoff is among the highest noise levels encountered in daily life, typically reaching around 120 dB. This high noise level is due to jet engines operating at full power and can cause hearing damage if individuals are exposed to it without protection.
Information Booster Noise levels are measured on a logarithmic scale in decibels (dB), where each increase of 10 dB represents a tenfold increase in intensity. Prolonged exposure to noise levels above 85 dB can be harmful, potentially leading to hearing damage or other health issues. The sequence given here is representative of average noise levels, which can vary depending on factors like time of day, traffic patterns, and environmental conditions.
· Typical Office (Option E): Office noise is usually controlled and kept within a low range to allow for focus and productivity, often maintained between 40-50 dB.
· Conversational Speech (Option B): Normal human conversation is around 60 dB, which is comfortable and manageable without causing noise disturbance.
· City Street Corner (Option A): Urban street corners have high background noise due to continuous vehicular and pedestrian activity, usually reaching around 70-80 dB.
· Highway (Option C): Noise levels on highways, typically around 80-90 dB, are higher due to fast-moving traffic and heavy vehicles, which can be problematic over long exposures.
· Aircraft Noise During Takeoff (Option D): Aircraft takeoff noise reaches about 120 dB, high enough to require ear protection due to the risk of hearing damage at this level.