Question

The intensity of sound wave gets reduced by 10% of initial level on passing through a slab.
The total reduction in intensity on passing through three consecutive slabs is
(1) 30%
(2) 70%
(3) 27.1%
(4) 72.9%
write your answer in the answer section not in explanation section such that then I can't mark brainlist tell me the answer I'll mark you as brainlist, but follow the condition given above ... ​

Answer 1

Answer:

The intensity of sound wave gets reduced by 10% of initial level on passing through a slab. The total reduction in intensity on passing through three consecutive slabs is. (1) 30%.

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