The hour hand of a clock is $6\,cm$ long. The magnitude of the displacement of the tip of hour between $1:00\,PM$ to $5:00\,PM$ is
The hour hand of a clock is $6\,cm$ long. The magnitude of the displacement of the tip of hour between $1:00\,PM$ to $5:00\,PM$ is
- A
$6\,cm$
- B
$6\sqrt 3\,cm$
- C
$12\,cm$
- D
$3\sqrt 3\,cm$
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