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  • The distance between in He molecule is . what will be the potential at a distance of

The distance between in He molecule is 1.25 A^{\circ}. what will be the potential at a distance of 12 \AA on the axis of dipole -

Option: 1

0.13 \mathrm{~V}


Option: 2

1.3 \mathrm{~V}


Option: 3

13 \mathrm{~V}


Option: 4

130 \mathrm{~V}


Answers (1)

best_answer

Potential is given by-
\mathrm{\begin{aligned} v & =\frac{1}{4 \pi 6} \frac{p}{r^2} \\ & =9 \times 10^9 \times \frac{1.6 \times 10^{-19} \times 1.28 \times 10^{-10}}{\left(12 \times 10^{-10}\right)^2} \\ v & =\frac{14.4 \times 10^{-10} \times 1.20 \times 10^{-10}}{144 \times 10^{-20}} \\ v & =\frac{14.4}{144} \times 1.28 \\ v & =\frac{1}{10} \times 1.20=\frac{1.28}{10} \\ v & =0.128=0.13 \mathrm{VAns} \end{aligned} }

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