A cyclist moves from a certain point P and goes round a circle of radius a and reaches Q, exactly at the other side of the point P as shown in figure. The displacement of the cyclist would be
A πa
B 2πa
C 2a
D 2π/a
A is correct.
Ans 2: (Master Answer)
Class : Class 1
Here, the answer is C.
Displacement is the shortest distance covered by a body.
In a circular path, the distance between the initial point (Here=P) and the final point (Here=Q) will give you the displacement.
Here, Shortest distance between P and Q is PO + OQ = a + a = 2a
Hence, the displacement of the cyclist would be 2a.