Agricultural Engineering > GATE 2013 > Noise
During a test, sound level was measured as 90 dB in the operator’s cabin on a tractor. Taking reference sound pressure as 2×10^{-5} N m^{-2}, the measured RMS sound pressure in N m^{-2} is
A
6.32
B
6.32×10^{-1}
C
1.8×10^{-3}
D
6.32×10^{-10}

Correct : b

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