Font size
WorksheetsII BSc Physics Thermodynamics
Total questions: 20
Worksheet time: 20mins
Coefficient of Viscocity of a gas is independent of
Pressure
Average molecular velocity
Absolute Temperature
Mass of Molecule of gas
Which of the following is not the equation for adiabatic process
PVγ = Constant
PV = Constant
P1−γTγ= C. = constant.
In an isothermal process
du = -dv
dQ = du
dQ = Cp dT + Pdv
dQ = dw
The first Law of Thermodynamics is concerned with the conservation of:
No.of molecules
Energy
no.of moles
Temperature
A carnot engine operates between 227o C and 127o C. The efficiency of the engine is
10%
20%
40%
50%
In this T-S diagram AD/AF gives
Work done
Efficiency
area
none
Which of the following is a thermodynamic potential.
Pressure
Volume
Temperature
Enthalpy
According to Joule-Kelvin effect which of the following suffer slight rise in temperature
Oxygen
Nitrogen
Helium
Carbon Dioxide
The shape of Carnot cycle in the temperature entropy diagram is
Rectangle
Trapezium
Rhombus
Parallelogram
The first person to liquify hydrogen is
Farady
Linde
Dewar
Kapitza
In an isothermal process (a) is constant.
Critical Temperature of Helium is (a) o C
H-TS is known as (a)
Inversion Temperature of Helium is (a) o C
Temperature of Sun is (a) o C
What is the value of Solar Constant
1340 wm-2
1.92 cal cm-2 min-1
both a&b
none
Wiens law in radiation is applicable to
longer wavelengths
shorter wavelengths
all wavelengths
none of the above
Efficiency of Carnot's Engine does not depends upon
Temperature of source
Temperature of sink
working substance
none of the above
In optical pyrometer, the temperature of the body can be calculated by using the formula
Raleigh-Janes Formula
Kirchoff’s Law
Stefan’s Law
Plank’s Law
Mean free path is inversely proportional to
density
Pressure
square of the diameter of the molecule
All of the above
