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The graph which represents the variation of mean kinetic energy of molecules with temperature  t^{\circ} c is 


 

Option: 1

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Option: 2

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Option: 3

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Option: 4

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Answers (1)

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mean kinetic energy of gas molecules

E =\frac{f}{2} K T \\

=\frac{f}{2} K(t+273) \\

=\left(\frac{f}{2} K\right) t+\frac{f}{2} \times 273 K

Comparing it with standard equation of straight line Y=m x+cwe get,  m=\frac{f}{2} K and  C=\frac{f}{2} 273K So, the graph between E and  t  will be straight line with positive intercept on  E-axis and positive slope with  t -axis.

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manish painkra

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