Two cars C1 and C2 are going round in concentric circles of radii R1 and R2. They complete the circular paths in the same time.
Then \(\frac{Speed\,of\,C_1}{Speed\,of\,C_2}\) =
(A) 1
(B) R1/R2
(C) R2/R1
(D) can not be determined as data is insufficient
