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ISRO 2009- ECE Engineering Mathematics

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A straight line and a circle of radius a are given. A chord is drawn at random to this circle parallel to the given line. Expected length of the chord is

a) 2a
b) π a
c) π a/2
d) None of the above
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Option (a)

The expected length of the chord is 2a, the case where it's the diameter of that circle.

In all other cases, we required additional info to solve it.
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