Question

The temperature of a body rose by ${40}^{\circ }C$. How much is the increase in Fahrenheit scale.

• A. $8^{\circ }F$
• B. ${40}^{\circ }F$
• C. ${62}^{\circ }F$
• D. ${72}^{\circ }F$

Answer 1

Answer: (D)

${72}^{\circ }F$

Suppose, $C_1$ is Celsius scale is equal to $F_1$ in Fahrenheit scale and $C_2$ is Celsius scale is equal to $F_2$ in Fahrenheit scale. So using the conversion formula we can get,
$\Delta C=\frac{5}{9}\times \Delta F$ ; where $\Delta C=C_1-C_2$ and $\Delta F=F_1-F_2$
Using this formula, ${40}^{\circ }$ rise in temperature on Celsius scale is equal to ${72}^{o}F$ increase on Fahrenheit scale.