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Two clocks A and B are shown in Figure. Clock A has an hour and a minute hand, whereas clock B has an hour hand, minute hand as well as a second hand. Which of the following statement is correct for these clocks? (a) A time interval of 30 seconds can be measured by clock A. (b) A time interval of 30 seconds cannot be measured by clock B. (c) Time interval of 5 minutes can be measured by both A and B. (d) Time interval of 4 minutes 10 seconds can be measured by clock A.

Answer: (c) Time interval of 5 minutes can be measured by both A and B. Clock A doesn’t have a seconds hand. Hence seconds cannot be... View Article