engineering recuitment DDA JE Civil 2023 Mock Test Environmental Engineering Air and Noise Pollution
The noise value of sound waves depends upon:
1. The frequency of sound waves
2. The intensity of sound waves
3. The time of exposure of sound waves1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
1, 2 and 3