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Q.

An accurate Celsius thermometer and a faulty Fahrenheit thermometer register 600C and 1440 F respectively when placed in the same constant temperature enclosure. What is the error in the Fahrenheit thermometer? 

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a

10F

b

30F 

c

40F

d

20F

answer is C.

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Detailed Solution

C100=F-32180

⇒60100=Factual-32180

⇒Factual=140 oF

⇒∆F=Fmeasured-Factual=144-140=4 0F

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