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A particle of mass m is allowed to fall ...

A particle of mass m is allowed to fall freely under gravity on an elastic horizontal surface. The quantum effect become important if the smallest de-Broglie wavelength of the particle is of the same order as the height from which it was dropped. Write the mechanical energy of the particle if quantum effects become important

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The correct Answer is:
`E = ((mg^(2)h^(2))/(2))^(1//3)`
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