WAEC Physics 2020 Objective — Question 31

Question 31 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.

The temperature of an object is raised by 120 C. The resulting increase in its absolute temperature is

A. 50 K
B. 120 KCorrect
C. 200 K
D. 393 K

Explanation

Given delta(theta)=120 deg C. Since delta(T in Kelvin)=delta(T in Celsius), the resulting increase in absolute temperature is 120 K. It is however important to note that temperature in Kelvin is not the same as temperature in degree Celsius; it is the changes in both that are the same. T(K)=273+T(C).

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