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PHYSICS

JAMB 2023 - Question 31

Physics 2023 JAMB Past Questions - Question 31: The ice and steam points of a mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread. When the length is 12cm, the temperature is

The ice and steam points of a mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread. When the length is 12cm, the temperature is

A: 32°C

B: 48°C

C: 65°C

D: 56°C

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Correct Answer

Explanation

steam point - ice point in oC = 100oC - 0oC

= 1.9cm - 3cm = 16cm

12cm = 3cm = 9cm

916916 x 100oC = 56.25oC

= 56oC