Q. Permissible noise level at Residential area during night time is:

(A) 80 dB
(B) 75 dB
(C) 55 dB
(D) 45 dB

✅ Correct Answer: (D) 45 dB

Published by Ram Sharma ⭐ 193.88K Points at 14-Mar-2022 02:46 pm in Physics

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