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InterviewSolution
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Two identical sinusoidal waves each of amplitude 10 mm with a phase difference of `90^(@)` are travelling in the same direction in a string. The amplitude of the resultant wave isA. 5 mmB. `10sqrt2` mmC. 15 mmD. 20 mm |
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Answer» Correct Answer - B Since the two waves are identical, they have amplitudes with phase difference of `90^(@)`. The amplitude of the resultant wave is, `A=sqrt(a^(2)+b^(2))=sqrt(a^(2)+a^(2)=asqrt2` Here, a= 10 mm, A=`10sqrt2`mm |
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