Question

If the least count of a stop clock is $0.5s$, then what are the number of divisions on the watch?

• A. $60$
• B. $120$
• C. $240$
• D. $360$

Answer 1

The correct option is B $120$

Time period of stop watch is $60$ seconds.
Least count of stop watch is $0.5$ second.
So, number of divisions $N=\frac{60}{0.5}=120$