If the body accelerating from rest to angular velocity of 45 rev/min in a time of 1.6s then its angular acceleration will be

Question : If the body accelerating from rest to angular velocity of 45 rev/min in a time of 1.6s then its angular acceleration will be

(A). 6.6 x 10-9 rad

(B). 6 x 10-9 rad

(C). 7.6 x 10-9 rad

(D). 8 x 10-9 rad