Q.

Human ear responds to intensities in range -

A. 10-12Wm-2 to 1Wm-2
B. 15Wm-2 to 18Wm-2
C. 108Wm-2 to 2Wm-2
D. 10-3Wm-1 to 10-6Wm-1
Answer» A. 10-12Wm-2 to 1Wm-2
Explanation: The human ear has an incredibly large range, being able to detect sound intensities from 1 x 10-12 W/m2 to 1 W/m2.
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