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Question

The temperature t on a thermometric scale is defined in terms of a property P by a relation t=aep+b
The values of P are found to be 1.56 and 8.25 at ice point and steam point the temperatures of which are assigned as 0 and 100 respectively. The temperature on this scale corresponding to value of P as 5.41 is

A
5.41
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B
5.84
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C
21.34
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D
52.33
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Solution

The correct option is B 5.84
For ice point, 0=ae1.56+b...(1)
For ice point, 100=ae8.23+b...(2)
For ice point, tc=ae5.41+b...(3)
Subtracting eq. (1) from (2), we get
1000=a(e8.23e1.56)...(4)
Dividing eq. (4) by (5)
1000tc100=e8.23e1.56e5.41e8.23
to=5.84

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