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Question

If the line x=a+m, y=-2 and y=mx are concurrent , then least value of |a| is


A

0

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B

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C

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D

2

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Solution

The correct option is C


x = a+m passes through (2m,2)

2m = a + m

m2+a+2 = 0

As 'm' has real value,

a28|a|22


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