physics mcqs test


Q.10 At triple point of water, the pressure of gas is 2680 Pa, by changing ‘T’ the pressure increases to 4870 Pa. Then ‘T’ is:
A) 496.38 K                                           C) Zero
B) 438.96 K                                           D) 496.38
oF

Q.12 A heat engine working according to second law of thermodynamics has 50% efficiency. What will be the temperature of its low temperature reservoir if high temperature reservoir is 327 oC?
A) 27 Oc                                    C) 300 oC
B) 127 oC                                  D) 600 oC

Q.13 When the rate of gas changes without change in temperature, the gas is said to undergo:
A) Isothermal Process                C) Isochoric Process
B) Adiabatic Process                  D) Isobaric Process
Q.14 What is the 273 K on the Celsius scale of temperature?
A) 0.15 oC                                 C) -0.15 oC
B) 273.15 oC                             D) -273.15 oC


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