3 - Temperature measurement Questions Answers
Q Agraph having temp *C along xaxis& *F along y axis. if graph is straight then it intercept +ve y axis. WHY ?
Asked By: SARIKA
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Joshi sir comment
(F-32)/9 = t/5
so F = 9t/5 + 32
on taking t = 0 we will get F = 32
thats why it makes an intercept of 32 in y axis
Two absolute scales A and B have triple points of water defined to be 200 A and 350 B. What is the relation between Ta and Tb?
(1) Ta = Tb/2
(2) Ta = 7Tb/4
(3) Ta = 2Tb
(4) Ta = 4Tb/7
Asked By: HIMANSHU MITTAL
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Joshi sir comment
273.15 K = 200 A
and 273.15 K = 350 B
so A = 273.15 K/200 and B = 273.15 K/350
so Ta A = TbB
or Ta/Tb = B/A = 200/350 = 4/7
so 4th option
The absolute zero temperature is
(1) -273° C
(2) -273.15 K
(3) -273.15° F
(4) -273.15° C
Asked By: HIMANSHU MITTAL
Joshi sir comment
it is -273.15 0C