A particle of mass m is executing oscillations about the origin on the – McqOptions

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1.	A particle of mass m is executing oscillations about the origin on the x-axis. Its potential energy is \[U(x)=k{{[x]}^{3}}\], where k is a positive constant. If the amplitude of oscillation is a, then its time period T is [IIT-JEE 1998]
A.	Proportional to \[\frac{1}{\sqrt{a}}\]
B.	Independent of a
C.	Proportional to \[\sqrt{a}\]
D.	Proportional to \[{{a}^{3/2}}\]
Answer» B. Independent of a

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