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| कॉलम-$I$ | कॉलम-$II$ |
| $A$. $A_1=A_2=A, \delta=0$ | $I$. $A_1+A_2$ |
| $B$. $A_1 \neq A_2, \delta=0$ | $II$. $0$ |
| $C$. $A_1=A_2=A, \delta=90^{\circ}$ | $III$. $2A$ |
| $D$. $A_1=A_2=A, \delta=180^{\circ}$ | $IV$. $A\sqrt{2}$ |
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