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Work Power and Energy question

2010 · Shift 0 · Q75
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Work Power and Energy question

2010 · Shift 0 · Q75

JEE MainPhysicsWork Power and EnergyMCQ+4 / −1
The potential energy function for the force between two atoms in a diatomic molecule is approximately given by U(x)=ax12−bx6,U\left( x \right) = {a \over {{x^{12}}}} - {b \over {{x^6}}},U(x)=x12a​−x6b​, where aaa and bbb are constants and xxx is the distance between the atoms. If the dissociation energy of the molecule is D=[U(x=∞)−Uat  equilibrium],  DD = \left[ {U\left( {x = \infty } \right) - {U_{at\,\,equilibrium}}} \right],\,\,DD=[U(x=∞)−Uatequilibrium​],D is
  1. A
    b22a{{{b^2}} \over {2a}}2ab2​
  2. B
    b212a{{{b^2}} \over {12a}}12ab2​
  3. C
    b24a{{{b^2}} \over {4a}}4ab2​
  4. D
    b26a{{{b^2}} \over {6a}}6ab2​
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