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In a test of subsonic Jet flies over hea...

In a test of subsonic Jet flies over head at an an altitude of 100 m. The sound intensity on the ground as the Jet passes overhead is 160 dB. At what altitude should the plane fly so that the ground noise is not greater than 120 dB.

A

above 10 km from ground

B

above 1 km from ground

C

above 5 km from ground

D

above 8 km from ground

Text Solution

Verified by Experts

The correct Answer is:
A
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