Degrees of Freedom, Law of Equipartition of Energy and Applications to Specific Heat Capacities of Gases NEET Questions

Physics - Kinetic Theory of Gases

Degrees of Freedom, Law of Equipartition of Energy and Applications to Specific Heat Capacities of Gases MCQ Questions


7.
A diatomic molecule that is NOT a rigid rotator (has vibrational mode) has total degrees of freedom equal to:
A.
5
B.
9
C.
7 (3 translational + 2 rotational + 2 vibrational)
D.
6
😑 View Answer Rough Work Error
ANSWER :
C. 7 (3 translational + 2 rotational + 2 vibrational)
8.
One vibrational mode contributes how many squared terms (degrees of freedom) to the total energy expression?
A.
3 (one for each spatial direction)
B.
2 (one kinetic + one potential energy term)
C.
1 (only kinetic energy term)
D.
4 (two kinetic + two potential)
😑 View Answer Rough Work Error
ANSWER :
B. 2 (one kinetic + one potential energy term)
9.
The kinetic energy of a single monatomic gas molecule moving in three dimensions is expressed as:
A.
εt = mvx² + mvy² + mvz²
B.
εt = ½mv²x only
C.
εt = ½mvx² + ½mvy² + ½mvz²
D.
εt = (3/2)mv²
😑 View Answer Rough Work Error
ANSWER :
C. εt = ½mvx² + ½mvy² + ½mvz²
10.
The motion of a body as a whole from one point to another is called:
A.
Translation
B.
Oscillation
C.
Rotation
D.
Vibration
😑 View Answer Rough Work Error
ANSWER :
A. Translation
11.
A molecule constrained to move along a straight line (one dimension) has how many translational degrees of freedom?
A.
1
B.
0
C.
2
D.
3
😑 View Answer Rough Work Error
ANSWER :
A. 1
12.
A molecule constrained to move in a plane (two dimensions) has how many translational degrees of freedom?
A.
3
B.
2
C.
4
D.
1
😑 View Answer Rough Work Error
ANSWER :
B. 2