When was the Environment Protection Act passed in India?
A source emitting a sound pressure of 200 x 105 µPa. What is noise produced by source in dB
The daytime noise limit in residential areas as per the Noise Pollution (Regulation and Control) Rules in dB is:
As per Noise Pollution (regulation and Control) Rules 2000 of India, the day time noise limit for a residential zone, expressed in dB is
The reverberation time of an excellent auditorium is typically between:
For the noise measurement formula for sound pressure level (SPL), the formula is 20 log(P/Pref). What will be the resultant noise in dB if P is 0.0002 microbar?
A sound source emitted three different noise levels: 100 dB, 120 dB, and 150 dB. What is the average sound pressure level (Lp) produced by the source?
A set of observations have been made for the elevation and temperature for a place as tabulated below
Considering the dry atmospheric condition, the lapse ratee can be
Match the following List I to List II:
List I
i. Factories
ii. Schools
iii. Court rooms
iv. Auditoriums
List II (Noise Levels in dB)
1. 40 to 45
2. 60 to 65
3. 35 to 40
4. 45 to 50
According to the Noise Pollution (Regulation and Control) Rules, 2000, of the Ministry of Environment and Forests, India, the day time and night time noise level limits in dB(A) Leq for residential areas are: