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The ice and steam point on a mercury-in-glass thermometer...

The ice and steam point on a mercury-in-glass thermometer are 10cm and 30cm respectively. Calculate the temperature in degree Celsius when the mercury meniscus is the 14cm mark

A.

20oC

B.

30oC

C.

34oC

D.

70oC

Correct answer is A

x01000=14103010

x = 100×420=20oC