# In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line One may canclude that:

Question:

In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line.

One may canclude that:

1. $\mathrm{R}(\mathrm{T})=\frac{\mathrm{R}_{0}}{\mathrm{~T}^{2}}$

2. $\mathrm{R}(\mathrm{T})=\mathrm{R}_{0} \mathrm{e}^{-\mathrm{T}_{0}^{2} / \mathrm{T}^{2}}$

3. $\mathrm{R}(\mathrm{T})=\mathrm{R}_{0} \mathrm{e}^{-\mathrm{T}^{2} / \mathrm{T}_{0}^{2}}$

4. $\mathrm{R}(\mathrm{T})=\mathrm{R}_{0} \mathrm{e}^{\mathrm{T}^{2} / \mathrm{T}_{0}^{2}}$

Correct Option: 2

Solution:

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