JEE Mains · Physics · STD 11 - 13. oscillations
Two simple harmonic waves having equal amplitudes of \(8\,cm\) and equal frequency of \(10\,Hz\) are moving along the same direction. The resultant amplitude is also \(8\,cm\). The phase difference between the individual waves is \(..................\) degree.
- A \(120\)
- B \(121\)
- C \(122\)
- D \(123\)
Answer & Solution
Correct Answer
(A) \(120\)
Step-by-step Solution
Detailed explanation
\(2 A \cos \left(\frac{\Delta \phi}{2}\right)= A\) \(\cos \left(\frac{\Delta \phi}{2}\right)=\frac{1}{2}\) \(\frac{\Delta \phi}{2}=60^{\circ}\)
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