"The circumferences of the front and rear wheels of a bicycle are 3.5 m and 3 m respect
Channel: Doubtnut
Date: 2020-04-05

"The
 circumferences of the front and rear wheels of a bicycle are 3.5 m and 3 m
 respectively. If the vehicle is moving at a speed of 15 m/sec, the shortest
 time in which both the wheels will make a whole number of turns is
(a) 1.4
 seconds (b) 2.1 seconds (c) 4 seconds (d) 6.4 seconds"