Let S = 0, S' = 0 be two circle intersec...

Let S = 0, S' = 0 be two circle intersecting at two distinct points and `L_1` be their common chord, `L_2` is the line joing their centres and `L_3` is the radical axis. Then

A

`L_1` is not perpendicular to `L_2`

B

`L_1,L_2` are perpendicular

C

`L_1` is parallel to `L_2`

D

`L_1 wedge L_3`

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The correct Answer is:

B

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