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

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

Advertisements
Advertisements

प्रश्न

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 ______________ .

विकल्प

  • is positive

  • is negative

  • is zero

  • cannot be obtained from this information

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

is zero

 

Work done by the gas during the process,

ΔW = P Δ V

Here,

P = Pressure

ΔV = change in volume

Since the process described in the figure is isochoric, P = kT. As volume remains constant (ΔV = 0), ΔW = 0.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 26: Laws of Thermodynamics - MCQ [पृष्ठ ६१]

APPEARS IN

एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
अध्याय 26 Laws of Thermodynamics
MCQ | Q 7 | पृष्ठ ६१

संबंधित प्रश्न

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


A cylinder containing a gas is lifted from the first floor to the second floor. What is the amount of work done on the gas? What is the amount of work done by the gas? Is the internal energy of the gas increased? Is the temperature of the gas 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?


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 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.


A gas is taken through a cyclic process ABCA as shown in figure. If 2.4 cal of heat is given in the process, what is the value of J ?


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.


Explain given cases related to energy transfer between the system and surrounding –

  1. energy transferred (Q) > 0
  2. energy transferred (Q) < 0
  3. energy transferred (Q) = 0 

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. 


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 ______.


Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following:

What is the change in internal energy of the gas?


An expansion process on a diatomic ideal gas (Cv = 5/2 R), has a linear path between the initial and final coordinates on a pV diagram. The coordinates of the initial state are: the pressure is 300 kPa, the volume is 0.08 m3 and the temperature is 390 K. The final pressure is 90 kPa and the final temperature s 320 K. The change in the internal energy of the gas, in SI units, is closest to:


The internal energy of one mole of argon at 300 K is ______. (R = 8.314 J/mol.K)


What is heat?


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×