Work NEET Questions

Physics - Thermodynamics

Work MCQ Questions


13.
The work done by an ideal gas in an isothermal process is proportional to:
A.
Change in volume
B.
Change in pressure
C.
Logarithm of volume change
D.
Logarithm of pressure change
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ANSWER :
A. Change in volume
14.

Work done during a polytropic process (PV^n = constant) is:

A.

PΔV

B.

nR ΔT

C.

P1V1 - P2V2

D.

nR(T2-T1)

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ANSWER :

A. PΔV

15.

The work done by a gas in an isothermal reversible expansion is:

A.

PΔV

B.

nRT ln(V2/V1)

C.

nR ΔT

D.

P1V1 - P2V2

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ANSWER :

C. nR ΔT

16.
For a given gas, maximum work is obtained in:
A.
Isothermal process
B.
Adiabatic process
C.
Isochoric process
D.
Cyclic process
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ANSWER :
A. Isothermal process
17.
Work done during expansion against a vacuum is:
A.
Zero
B.
Minimum
C.
Negative
D.
Positive
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ANSWER :
A. Zero
18.
Which of the following processes has zero work done?
A.
Isochoric process
B.
Adiabatic process
C.
Isothermal process
D.
Cyclic process
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ANSWER :
A. Isochoric process