1.

A body is attached to a spring whose other end is fixed. If the spring is elongated by x, its potential energy is `U=5x^2`, where x is in metre and U is in joule. U-x graph isA. B. C. D.

Answer» Correct Answer - A
`U=5x^2`, it is the equation of parabola with concavity is upward. At `x=0`,`U=0`, it means graph is passing through origin.
Hence, option (a) is correct.


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