Q: The potential energy of a 1 kg particle free to move along the X – axis is given by $ V(x) = \frac{x^4}{4}- \frac{x^2}{2} $ J. The total mechanical energy of the particle is 2 J. Then, the maximum speed (in ms-1) is
(a) 3/√2
(b) √2
(c) 1/√2
(d) 2
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Ans: (a)