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The displacement of a particle after tim...

The displacement of a particle after time is given by `x = k/b^2 (1-e^(-bt))` where 'b' is a constant. The acceleration of the particle is

A

`ke^(-bt)`

B

`-ke^(-bt)`

C

`k/b^2 e^(-bt)`

D

`(-k)/b^2e^(-bt)`

Text Solution

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The correct Answer is:
B
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