The lower and upper fixed points marked on a Mercury-in-glass thermometer are 210mm apart. The end of the mercury column in the tube is 49mm above the lower fixed point in a room. What is the temperature of the room in degrees Celsius?

By: |Published on: Mar 26|Categories: Physics JAMB| 0 comments

A. 55.3°C
B. 23.3°C
C. 49.0°C
D. 16.43°C

Correct Answer:

Option B = 23.3°C

Explanation

49−0/210−0 = θ−0/100−θ

49/210=θ/100

49 x 100 = 210 x θ

Θ = 4900/210 = 23.3o

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