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Question

Temperature of an object increases by 40 degrees on the Celsius scale. What are corresponding changes on the Fahrenheit scale and absolute scale?

A
40F,72 K
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B
72F,40 K
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C
22.2F,40 K
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D
40F,22.2 K
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Solution

The correct option is B 72F,40 K
As ΔT=40C, we can choose any 2 temperatures , lets take 0 C & 40C .

Now, we have to find corresponding ΔTF in Fahrenheit scale
TC=59 (TF32)

Let TF1 and TF2 be the corresponding temperature on Fahrenheit scale.
Then, 0=59 (TF132)
TF1=32F
Similarly,
40=59 (TF232)
TF2=104F
ΔTF=10432=72F

Also, we know ΔTC=ΔTK
ΔTK=40 K

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