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The magnitude Bode plot of a network is shown in the figure

The maximum phase angle $\phi _m$ and the corresponding gain $G_m$ respectively, are

  1. $-30^{\circ}$ and $1.73$ $dB$
  2. $-30^{\circ}$ and $477$ $dB$
  3. $+30^{\circ}$ and $4.77$ $dB$
  4. $+30^{\circ}$ and $1.73$ $dB$
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