Question

A cyclist starts from the point P of a circular ground of radius 2 km and travels along its circumference to the point S. The displacement of a cyclist is :

(1) 6 km 

(2) \(\sqrt{8}\) km 

(3) 4 km 

(4) 8 km 

Answer 1

Correct option is : (2) \(\sqrt{8}\) km

\(\therefore\) Displacement \(=\mathrm{R} \sqrt{2}=2 \sqrt{2}=\sqrt{8} \mathrm{~km}\)