AP EAMCET Engineering 18 Sep 2020 Shift 1 Paper

Section: Physics

Question : 102 of 160

Marks: +1, -0

On getting reflected at a surface, the intensity of sound is found to be decreased by 20%. If ‘A’be the amplitude of the incident sound waves, then the amplitude of reflected sound waves is

4
5
A
2
√5
A
√2
5
A
1
√5
A

Validate

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