Which of the following set of variables give a straight line with a negative slope when plotted? ( $P=$…

Which of the following set of variables give a straight line with a negative slope when plotted? ( $P=$ vapour pressure. $T=$ Temperature in $K$ )
  1. $\boldsymbol{y}$-axis $\boldsymbol{x}$-axis $P \quad T$
  2. $\boldsymbol{y}$-axis $\boldsymbol{x}$-axis $\log _{10} P \quad T$
  3. $\boldsymbol{y}$-axis $\boldsymbol{x}$-axis $\log _{10} P \frac{1}{T}$
  4. $\boldsymbol{y}$-axis $\boldsymbol{x}$-axis $\log _{10} P \log _{10} \frac{1}{T}$

Solution

$\frac{1}{T}$ on $x$ axis and $\log _{10} P$ on $y$ axis gives a straight line with a negative slope.

Asked in: AP EAMCET 2006

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