हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Consider the Process on a System Shown in Figure. During the Process, the Work Done by the System - Physics

Advertisements
Advertisements

प्रश्न

Consider the process on a system shown in figure. During the process, the work done by the system ______________ .

विकल्प

  • continuously increases

  • continuously decreases

  • first increases then decreases

  • first decreases then increases

MCQ
रिक्त स्थान भरें

उत्तर

continuously increases

 

Work done by a system, `W=intPdV`

Here,

P = Pressure on the system

dV = change in volume.

Since dV is positive, i.e. the volume is continuously increasing, work done by the system also continuously increases.

shaalaa.com
Heat, Internal Energy and Work
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Laws of Thermodynamics - MCQ [पृष्ठ ६१]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 4 Laws of Thermodynamics
MCQ | Q 5 | पृष्ठ ६१

संबंधित प्रश्न

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


Should the internal energy of a system necessarily increase if its temperature is increased?


A closed bottle contains some liquid. the bottle is shaken vigorously for 5 minutes. It is found that the temperature of the liquid is increased. Is heat transferred to the liquid? Is work done on the liquid? Neglect expansion on heating.


Can work be done by a system without changing its volume?


An ideal gas is pumped into a rigid container having diathermic walls so that the temperature remains constant. In a certain time interval, the pressure in the container is doubled. Is the internal energy of the contents of the container also doubled in the interval ?


Figure shows two processes A and B on a system. Let ∆Q1 and ∆Q2 be the heat given to the system in processes A and B respectively. Then ____________ .


Consider two processes on a system as shown in figure.

The volumes in the initial states are the same in the two processes and the volumes in the final states are also the same. Let ∆W1 and ∆W2 be the work done by the system in the processes A and B respectively.


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.


Figure shows three paths through which a gas can be taken from the state A to the state B. Calculate the work done by the gas in each of the three paths.


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 gas is taken along the path AB as shown in figure. If 70 cal of heat is extracted from the gas in the process, calculate the change in the internal energy of the system.


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


Explain the different ways through which the internal energy of the system can be changed. 


One gram of water (1 cm3) becomes 1671 cm3 of steam at a pressure of 1 atm. The latent heat of vaporization at this pressure is 2256 J/g. Calculate the external work and the increase 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 ______


When 1 g of water at 0° C and 1 x 105 N/m2 pressure is converted into ice of volume 1.082 cm3, the external work done will be ____________.


Explain the change in internal energy of a thermodynamic system (the gas) by heating it.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×