TS EAMCET · Physics · Waves and Sound
Two identical sinusoidal waves are moving in the same direction along a stretched string, interfere with each other. The phase difference between them is \(120^{\circ}\). The amplitudes of both the waves are same. If the amplitude of the resultant wave due to interference is \(2 \mathrm{~mm}\), the amplitude of each wave is
- A \(1 \mathrm{~mm}\)
- B \(2 \mathrm{~mm}\)
- C \(\sqrt{3} \mathrm{~mm}\)
- D \(2 \sqrt{3} \mathrm{~mm}\)
Answer & Solution
Correct Answer
(B) \(2 \mathrm{~mm}\)
Step-by-step Solution
Detailed explanation
Given, amplitude of each sinusoidal waves are same. i.e., \(\quad a_1=a_2=a\) phase difference, \(\phi=120^{\circ}\) Resultant amplitude, \(A=2 \mathrm{~mm}\)…
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