# The lower and upper fixed point of a thermometer are 30mm and 180mm respectively....

Question 896
A
10.0oC
B
15.0oC
C
20.0oC
D
30.0oC
##### Explanation
100....180
A......45
0......30

$$\frac{45 - 30}{180 - 30} = \frac{A - 0}{100 - 0}$$

A = $$\frac{15 \times 100}{150} = 10^oC$$

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