Class XI Physics Thermodynamics 2

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Question 1

Which is not true for irreversible isothermal expansion?

• AWork is done against a constant external pressure
• BWork is done against a zero external pressure
• Cq= -w = 0
• D = 0

Question 2

An ideal monoatomic gas is taken across the given cyclic path. What is the work done during the given cycle?

• A2 pV
• BpV
• C0.5 pV
• DZero

Question 3

Which of the following statements is incorrect?

• AThe inversion temperature is the temperature at which µ_JT = 0.
• BUnder the condition of low temperature and high pressure, the inversion temperature can be determined.
• CAt the inversion temperature, neither heating nor cooling is observed.
• D

Question 4

During isothermal, isobaric and adiabatic process work done for same change in volume will be maximum for –

• AIsothermal
• BIsobaric
• CAdiabatic
• DNone of these

Question 5

A system changes from the state (P₁, V₁) to (P₂, V₂) as shown in the figure below. What is the work done by the system –

• A7.5 × 10⁵ joule
• B7.5 × 10⁴ erg
• C12 × 10⁵ joule
• D16 × 10⁵ joule

Question 6

For an isochoric process, the first law may be stated as

• AdU = C_vdT
• BdU = C_pdT
• CdQ = C_pdT
• Dnone of the above

Question 7

An ice slab kept at atmospheric pressure at 0^oC starts melting then what is the nature of work.

• APositive
• Bnegative
• Cno work done
• Ddata not sufficient

Question 8

Which of the following statement is true regarding two specific heat capacities.

• ASolid and Liquid does not undergo change in pressure and volume
• BGas undergo change in pressure and volume
• Cboth a and b
• Dnone of these

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