JAMB Physics 2020 Objective — Question 13

Question 13 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2020 Objective paper, with the correct answer and a full explanation.

13. For what celsius temperature is the reading on the celsius scale equal to that on the fahrenheit scale?

A. A. -80°C
B. B. 80°C
C. C. -40°CCorrect
D. D. 40°C

Explanation

F=9/5C+32. Setting F=C=x: x=9/5x+32 → -4/5x=32 → x=-40. So -40°C corresponds to -40°F.

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