What is the decibel level of sound produced by two persons in conversation?
A. About 5 decibel
B. About 10 decibel
C. About 30 decibel
D. About 100 decibel
Answer: Option C
A. About 5 decibel
B. About 10 decibel
C. About 30 decibel
D. About 100 decibel
Answer: Option C
Which of the following substances will have the lowest speed of sound?
A. Water
B. Steel
C. Glasss
D. Air
What is the approximate range of sound for humans?
A. 20Hertz to 2000 Hertz
B. 20Hertz to 200Hertz
C. 20 Hertz to 20000 Hertz
D. 2 Hertz to 2000 Hertz
Loudness of sound depends upon which of the following?
A. Frequency
B. Wavelength
C. Amplitude
D. Overtones
A. On land
B. In air
C. In space
D. Underwater
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