. The length of the seconds hand of a watch is 10 mm
The length of the seconds hand of a watch is 10 mm. What is the change in the angular speed of the watch after 15 seconds
B. (10π/2) mms-1
C. (20/π) mms-1
D. 10√2 mms-1
Correct Option is: A. Angular speed of seconds hand of watch is constant and equal to 2π/60 rad/sec = π/30 rad/sec. So change in angular speed will be zero.