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[" (1) Statement- "1" is "12" ."],[" 30....

[" (1) Statement- "1" is "12" ."],[" 30.If the circle "x^(2)+y^(2)+2x+2ky+6=0" and "],[x^(2)+y^(2)+2ky+k=0" intersect orthogonally then "],[[k" is "," (b) "-2" or "-3/2],[" (a) "2" or "-3/2," (b) "-2" or "3/2],[" (c) "2" or "3/2," (d) "-2" or "3/2],[" (c) "2" or "3/2," (d) "-2" or "3/2]]

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If the circles x^(2) + y^(2) + 2x + 2ky + 6 = 0 and x^(2) + y^(2) + 2ky + k = 0 intersect orthogonally , then k is equal to _

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