CUET Preparation Today
Phase difference between two waves having same frequency (v) and same amplitude (A) is $2π/3$. If these waves superimpose each other, then resultant amplitude will be |
2A 0 A A2 |
A |
$A_R=\sqrt{A^2+A^2+2A×A\cos θ}$ $=\sqrt{A^2+A^2+2A^2\cos\frac{2π}{3}}$ $=\sqrt{A^2+A^2+2A^2(-\frac{1}{2})}$ $\sqrt{A^2+A^2-A^2}=\sqrt{A^2}=A$ |
