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The potential energy of a particle varie...

The potential energy of a particle varies with distance `x` from a fixed origin as `U = (A sqrt(x))/( x^(2) + B)`, where `A and B` are dimensional constants , then find the dimensional formula for `AB`.

A

`[ML^(5//2)T^(-2)], [L]`

B

`MLT^(-2)],[L^2]`

C

`[L],[ML^(3//2)T^(-2)]`

D

`[L^2], [MLT^(-2)]`

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