Two sound waves each of amplitude a and of frequencies 500Hz and 512Hz superpose. Then the resultant of the amplitude of the resultant wave at t=548s is
A
0
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B
a√2
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C
a√2
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D
2a
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Solution
The correct option is Ba√2 When two sound waves of slightly different frequencies and equal amplitudes superimpose on each other, then their resultant amplitude is given by