The third needle of the clock which may or may not be present in a 12-hour clock completes 1 rotation to move the minute needle by one minute. This needle measures the ___.

second

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minute

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hour

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Either option b or c

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Solution

The correct option is A
second

The second needle. It need not be present in all the clocks. If the minute needle just moves by a minute the second needle complete 1 rotation which explains why
1 minute = 60 seconds

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The third needle of the clock which may or may not be present in a 12-hour clock completes 1 rotation to move the minute needle by one minute. This needle measures the ___.

The correct option is A second The second needle. It need not be present in all the clocks. If the minute needle just moves by a minute the second needle complete 1 rotation which explains why 1 minute = 60 seconds

The correct option is A
second

The second needle. It need not be present in all the clocks. If the minute needle just moves by a minute the second needle complete 1 rotation which explains why
1 minute = 60 seconds