Question

On the centigrade scale, the temperature of a body increases by $30$ degrees. The increase in temperature on the Fahrenheit scale is :

• A. ${50}^o$
• B. ${40}^o$
• C. ${30}^o$
• D. ${54}^o$

Answer 1

Answer: (D)

${54}^o$

$F=\frac{9}{5}C+32$

So, $F_1=\frac{9}{5}{C}_1+32$ & $F_2=\frac{9}{5}{C}_2+32$

$F_1-F_2=\frac{9}{5}(C_1-C_2)=\frac{9}{5}\left(30\right)={54}^{o}F$.