The lower and upper fixed points of a mercury-in-glass thermometer are marked X and 180 mm respectively. On a particular day the mercury meniscus in the thermometer rises to 60mm. If the corresponding reading on a Celsius scale is 20 ° C, what is the value X?
a
6.0mm
b
18.0mm
c
30.0mm
d
60.0mm
e
120.0mm
Explanation
Correct Option
cNo explanation available
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