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Question

Find the angular displacement of the hour hand of a normal clock in 4 h

A
π3
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B
π6
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C
2π3
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D
3π2
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Solution

The correct option is C 2π3
We know that,
hour hand covers 2π rad in 12 hrs


θ covered in 1 hr =2π12 rad

So, θ covered in 4 hrs

=2π12×4=2π3 rad

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