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Q. The distance (in meters) a wave has to propagate in a medium having a skin depth of 0.1 m so that the amplitude of the wave attenuates by 20 dB, is
(A) 0.12 (B) 0.23 (C) 0.46 (D) 2.3
Ans: 0.23
Q. The distance (in meters) a wave has to propagate in a medium having a skin depth of 0.1 m so that the amplitude of the wave attenuates by 20 dB, is
(A) 0.12 (B) 0.23 (C) 0.46 (D) 2.3
Ans: 0.23
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