Asked: R.A.S./R.T.S. (Pre) 2012medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
मनुष्यों के लिए मानक ध्वनि स्तर है-
The standard sound level for human beings is:
SELECT CORRECT OPTION:
A
90 db
90 dB
B
60 db
60 dB
Correct
C
120 db
120 dB
D
100db
100 dB
Official Solution & Explanation:
Correct Answer: Option B(60 db)
विश्व स्वास्थ्य संगठन (WHO) के अनुसार 45 dB सर्वोत्तम तथा 60 dB तक की ध्वनि सामान्य मानव गतिविधियों के लिए मानक एवं स्वीकार्य ध्वनि स्तर है।
A sound level of 60 dB is considered the comfortable, standard daytime acoustic environment for normal human interaction.
Subject: General Science•Topic: Sound / Acoustics•Subtopic: Sound / Acoustics
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