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Question

Two chords of a circle bisect each other. Then


A

The chords are of equal length but less than the length of the diameter.

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B

The chords are of unequal length.

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C

The chords should be perpendicular bisectors of each other.

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D

The chords are any two diameters.

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Solution

The correct option is D

The chords are any two diameters.


Let AB, CD be the chords intersecting at P such that AP = PB, CP = PD. As PC.PD = PA.PB, we get PA2=PC2 or PA = PC. This means AB = CD, i.e., the chords are of equal length. The perpendicular to AB and CD at their midpoints pass through the centre of the circle.

Unless P is the centre of the circle this cannot happen. Thus AB and CD are diameters of the circle. They need not be mutually perpendicular. Thus option (D) is the correct one.


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