The lower and upper fixed points of a mecury-in... - WAEC Physics 1998 Question
The lower and upper fixed points of a mecury-in-glass thermometer are marked Y and 180mm respectively. On a particular the mecury meniscus in the thermometer rises to 45mm. If the corresponding reading on a scale is 10o, calculate the value of Y.
A
4mm
B
18mm
C
30mm
D
135mm
correct option: c
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