Question

A cyclist moves from a certain point X and goes round a circle of radius $r$ and reaches Y which is exactly at the other side of the circle of the point X as shown in the given figure. The displacement of the cyclist would be

• A. $\pi r$
• B. $2\pi r$
• C. $2r$
• D. $\frac{2\pi }{r}$

Answer 1

Answer: (C)

$2r$

As per the question , the cyclist covers half a circle .
Displacement of the cyclist is $=$ the diameter of the circle
$=2r$