Question

Time taken by second hand to complete one round of clock is .

• A. $1$ minute
• B. $12$ minutes
• C. $60$ minutes

Answer 1

The correct option is A $1$ minute


In an analog clock, there are $5$ divisions between any two consecutive bigger marks as shown in above figure. And there are total $12$ bigger marks in a clock, hence $12\times 5=60$ divisions.

Now, time taken by second hand to travel one division $=1$ second.
$\therefore$ Time taken by second hand to travel $60$ divisions $=60$ seconds
$⟹$ Time taken by second hand to complete one round of clock $=60$ seconds $=1$ minute.