मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

Consider the Following Two Statements. (A) If Heat is Added to a System, Its Temperature Must Increase. (B) If Positive Work is Done by a System in a Thermodynamic Process, Its Volume Must Increase. - Physics

Advertisements
Advertisements

प्रश्न

Consider the following two statements.

(A) If heat is added to a system, its temperature must increase.

(B) If positive work is done by a system in a thermodynamic process, its volume must increase.

पर्याय

  • Both A and B are correct

  • A is correct but B is wrong

  • B is correct but A is wrong

  • Both A and B are wrong

MCQ

उत्तर

B is correct but A is wrong

 

If heat is added to a system in an isothermal process, then there'll be no change in the temperature.

Work done by system, ΔW = P Δ V

⇒ ΔW = Positive ⇒ ΔV = Positive

Here,

P = Pressure

ΔV = change in volume

shaalaa.com
Heat, Internal Energy and Work
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Laws of Thermodynamics - MCQ [पृष्ठ ६१]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
पाठ 4 Laws of Thermodynamics
MCQ | Q 6 | पृष्ठ ६१

संबंधित प्रश्‍न

Explain why Air pressure in a car tyre increases during driving.


The final volume of a system is equal to the initial volume in a certain process. Is the work done by the system necessarily zero? Is it necessarily nonzero?


An ideal gas goes from the state i to the state f as shown in figure. The work done by the gas during the process ______________ .


In a process on a system, the initial pressure and volume are equal to the final pressure and volume.

(a) The initial temperature must be equal to the final temperature.

(b) The initial internal energy must be equal to the final internal energy.

(c) The net heat given to the system in the process must be zero.

(d) The net work done by the system in the process must be zero.


A substance is taken through the process abc as shown in figure. If the internal energy of the substance increases by 5000 J and a heat of 2625 cal is given to the system, calculate the value of J.


A mixture of fuel and oxygen is burned in a constant-volume chamber surrounded by a water bath. It was noticed that the temperature of water is increased during the process. Treating the mixture of fuel and oxygen as the system,

  1. Has heat been transferred?
  2. Has work been done?
  3. What is the sign of ∆U?

Which of the following system freely allows the exchange of energy and matter with its environment? 


What is the energy associated with the random, disordered motion of the molecules of a system called as?


A system releases 100 kJ of heat while 80 kJ of work is done on the system. Calculate the change in internal energy.


A cylinder containing one gram molecule of the gas was compressed adiabatically until its temperature rose from 27°C to 97°C. Calculate the work done and heat produced in the gas (𝛾 = 1.5).


The internal energy of a system is ______


A thermodynamic system goes from states

(i) P, V to 2P, V  (ii) P, V to P, 2V

The work done in the two cases is ____________.


An ideal gas is compressed at a constant temperature. Its internal energy will ____________.


8 m3 of a gas is heated at the pressure 105 N/m2 until its volume increases by 10%. Then, the external work done by the gas is ____________.


Which of the following represents isothermal process?


If a gas is compressed adiabatically:


A steam engine delivers 4.8 x 108 Jof work per minute and services 1.2 x 109 J of heat per minute from its boiler. What is the percentage efficiency of the engine?


A system releases 125 kJ of heat while 104 kJ work is done on the system. Calculate the change in internal energy.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×