Question

A $10°C$ fall in temperature is equal to

• A. $10°F$ fall in temperature.
• B. $18°F$ fall in temperature.
• C. $10°F$ rise in temperature.
• D. $18°F$ rise in temperature.

Answer 1

The correct option is D

$18°F$ rise in temperature.

Step 1: Given Data

The given temperature $T_C=10°C$

Step 2: Temperature in Fahrenheit

We know that $1°C=\frac{9}{5}°F$

So if there is a $1°C$ rise in temperature, equivalently to $\frac{9}{5}°F$ rise in temperature.

$\therefore 10°C=\left(\frac{9}{5}\times 10\right)°F$

$=18°F$

Therefore, there is an equivalent $18°F$ rise in temperature.

Hence, the correct answer is option (D).