NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Analyzing +4 | -1

The potential energy function for the force between two atoms in a diatomic molecule is approximately given by

U\left( x \right)\frac{a}{{{x^{12}}}}\; - \frac{b}{{{x^6}}}

,where a and b are constants and x is the distance between the atoms , If the dissociation energy of the molecule is

D = \left[ {U\left( {x = \infty } \right) - {U_{\mathrm{at\,\,equilibrium}}}} \right],D

View answer and explanation

Correct option: C

\frac{{{b^2}}}{{4a}}

Option C (

\frac{{{b^2}}}{{4a}}

) is correct because the dissociation energy is calculated by finding the equilibrium distance and substituting it back into the potential energy function.

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