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Question

Two clocks A and B are shown in below figure. Clock A only has an hour and a minute hand, whereas clock B has an hour hand, minute hand and a second hand as well. Which of the following statements is correct for these clocks?

A
A time interval of 3 seconds can be measured by clock A.
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B
A time interval of 30 seconds cannot be measured by clock B.
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C
Time interval of 5 minutes can be measured by both A and B.
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D
Time interval of 4 minutes 10 seconds can be measured by clock A.
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Solution

The correct option is C Time interval of 5 minutes can be measured by both A and B.
Clock A cannot measure seconds as it doesn't have a second hand. Clocks A and B both have minute hands, so time interval of 5 minutes can be measured by both of them.

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