The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is
A. 0.086
B. 1.086
C. 2.086
D. 4.086
Answer: Option B
This Question Belongs to Mechanical Engineering >> Engineering Thermodynamics
Join The Discussion
Comments (3)
Related Questions on Engineering Thermodynamics
Addition of heat at constant pressure to a gas results in
A. Raising its temperature
B. Raising its pressure
C. Raising its volume
D. Raising its temperature and doing external work
Which of the following items is not a path function?
A. Heat
B. Work
C. Kinetic energy
D. Thermal conductivity
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is
A. Feasible
B. Impossible
C. Possible
D. Possible, but with lot of sophistications
The absolute zero pressure can be attained at a temperature of
A. 0°C
B. -273°C
C. 273 K
D. None of these
OPTION B AND C SAME
Why b and c is same and c is not correct pl correct
As we know, the 2 types of speed are defined as-
Root mean square speed, v
rms
=
M
3RT
Average speed, v
average
=
πM
8RT
Therefore, their ratio becomes,
v
average
v
rms
=
8π
3
=1.086:1