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JAMB Physics 2013 Objective — Question 16

Question 16 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2013 Objective paper, with the correct answer and a full explanation.

Calculate the length which corresponds to a temperature of 20°C if the ice and steam points of an ungraduated thermometer are 400mm apart.

A. 20mm
B. 30mm
C. 60mm
D. 80mmCorrect

Explanation

Using the ratio: (100-0)/(400-0) = (20-0)/(x-0), x = (20×400)/100 = 80mm.

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