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Mechanical Engineering · Q4

Engineering Thermodynamics

Engineering and GATE · Mechanical Engineering · question 4

Q4

The absolute zero pressure can be attained at a temperature of

A.
0°C
B.
-273°C
Answer
C.
273 K
D.
None of these

Answer: Option B

Solution

Answer: Option B
Solution:
Correct Option is (B)
The lower the temperature, the lower the pressure inside of the sphere.
If the exact values were plotted out, a linear relationship would be apparent.
Extrapolating this line to the point where there would be no pressure yields absolute zero, which is about -273.15 degrees Celsius.