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Question

If a chord of the circle x2+y2=32 makes equal intercepts of length l on the coordinate axes, then |l|<

A
2
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B
5
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C
8
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D
7
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Solution

The correct option is C 8
Since the chord makes equal intercept of length l on the coordinate axes, so its equation can be written in the form x±y=±l.
Since the chord intersect the given circle at two distinct points, therefore the length of the from the center (0,0) of the given corcle to the chord must be less than the radius
±l2<32l2<64|l|<8

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