Asked: U.P.P.C.S. (Pre) 2018medium Level
ID: 6aeba3c93b345304a2745044
QUESTION STATEMENT:द्विभाषी / Bilingual
निम्नलिखित में कौन सामान्य परिस्थिति में वृक्ष के पत्तों की सरसराहट का डेसीबल स्तर प्रदर्शित करता है?
Which of the following represents the decibel level of the rustling of leaves of a tree in normal conditions?
SELECT CORRECT OPTION:
A
10 dB
B
20 dB
Correct
C
60 dB
D
100 dB
Official Solution & Explanation:
Correct Answer: Option B(20 dB)
सामान्य परिस्थिति में शांत वातावरण में वृक्ष के पत्तों की सरसराहट लगभग 20 डेसीबल (dB) की ध्वनि उत्पन्न करती है। फुसफुसाहट (Whisper) लगभग 30 dB, सामान्य बातचीत लगभग 60 dB तथा भारी यातायात 80-85 dB होता है।
Under normal conditions in a quiet environment, the rustling of tree leaves generates a sound level of approximately 20 decibels (dB). A gentle whisper is around 30 dB, normal human conversation is about 60 dB, and heavy road traffic ranges from 80–85 dB.
Subject: Environment & Ecology•Topic: Pollution & Its Types•Subtopic: Noise Pollution
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