Question

If the least count of a stop watch is $1s$, then what are the number of divisions on the watch?

• A. $60$
• B. $120$
• C. $180$
• D. $240$

Answer 1

The correct option is A $60$

Time period of stop watch is $60$ seconds.
Least count of stop watch is $1$ second.
So, number of divisions $N=\frac{60}{1}=60$