On a temperature scale $Y$, water freezes at $-160^{\circ} Y$ and boils at $-50^{\circ} Y$. On this $Y$…

On a temperature scale $Y$, water freezes at $-160^{\circ} Y$ and boils at $-50^{\circ} Y$. On this $Y$ scale, a temperature of $340 \mathrm{~K}$ is
  1. $-160.3^{\circ} \mathrm{Y}$
  2. $-96.3^{\circ} \mathrm{Y}$
  3. $-86.3^{\circ} \mathrm{Y}$
  4. $-76.3^{\circ} Y$

Solution

In given condition $ \begin{aligned} \frac{Y+160}{-50+160} & =\frac{340-273}{373-273} \\ \frac{Y+160}{110} & =\frac{67}{100} \\ Y+160 & =\frac{67 \times 110}{100} \\ Y & =73.7-160 \\ Y & =-86.3^{\circ} Y \end{aligned} $

Asked in: AP EAMCET 2013

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