Question

If, in defining the specific heat, temperature is represented in ${}^{\circ }F$ instead of ${}^{\circ }C$ then the numerical value of specific heat will

• A. be converted to heat capacity
• B. remain unchanged
• C. decrease
• D. increase

Answer 1

The correct option is C decrease

The reading in Fahrenheit is more than that of Celsius reading for same temperature. So increase of $1^{o}F$ means $<1^{o}C$ increase in temperature. So $\Delta T$ is more for Fahrenheit reading.

As specific heat is $c=Q/m\Delta T$ which implies that specific heat $c$ will be lower for the Fahrenheit reading.

i.e., value of specific heat will decrease for Fahrenheit reading of temperature.