Question
The potential energy is a function for the force between two atoms in a diatomic molecule is given by
`U(x) = a/x^12 - b/x^6` where a and b are positive constants and x is the distance between the atoms . The position of stable equilibrium for the system of the two atoms is given by
Answer: Option D
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`because U(x) = a/x^12 - b/x^6`
At the stable equilibrium ` (dU)/(Dx) = 0`
`- (12a)/(x^13) + (6b)/(x^7) = 0
`x = ((2a)/(b))^(1/6)`
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