A few electric field lines for a system of two charges Q1 and Q2 fixed at two different points on the x-axis are shown in the figure. These lines suggest that

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| Q1 | > | Q2 |
line density near Q1 is more
Q1 = +ve
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Q2 = – ve
and | Q1 | > | Q2 |
E = 0 at right of Q2