ध्वनि प्रदूषण स्तर की यूनिट क्या है? Dhoni Pradushan Astar Ki Unit Kya Hai?
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ध्वनि प्रदूषण स्तर की यूनिट क्या है? Dhoni Pradushan Astar Ki Unit Kya Hai?

(A) डेसिबल

(B) डेसिमल

(C) ppm

(D) इनमें से कोई नहीं
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ध्वनि की ईकाई डेसीबल होता है। अतः इन विकल्पों में से विकल्प (A) सही उत्तर होगा।

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