The ice and steam points of mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread when the length is 12cm, the temperature is
-
A.
32oC -
B.
48oC -
C.
56oC -
D.
65oC -
E.
75oC
Correct Answer: Option C
Explanation
steam point – ice point in oC = 100oC – 0oC
= 1.9cm – 3cm = 16cm
12cm = 3cm = 9cm
(frac{9}{16}) x 100oC = 56.25oC
= 56oC