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Distance

A cyclist mov...

Question

A cyclist moves from a certain point X and goes round a circle of radius 'r' and reaches Y, exactly at the other side of the point X, as shown in Figure. The displacement of the cyclist would be

A

π r

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B

2 π r

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C

2r

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D

2 π / r

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Solution

The correct option is C 2r
Displacement is the shortest distance between two points.
As X and Y are diametrically opposite, displacement is 2r.

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