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The motion of a particle is expressed by...

The motion of a particle is expressed by the equation `a = -bx` where 'a' is acceleration, 'x' is the displacement from the equilibrium position and 'b' is a constant. The periodic time will be

A

`(2pi)/b`

B

`(2pi)/(sqrt(b))`

C

`2pi sqrt(b)`

D

`2sqrt((pi)/b)`

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The correct Answer is:
B
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