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
e
450mm
Explanation
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brian123brian
3 years ago
100° = 180mm
10° = 45mm
0° = Y
;(10-0)/(100-0) = (45-y) /(180-y)
1/10= (45-y) /(180-y)
450-10y = 180-y
9y=270
y=30mm
