All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2009 Physics

Q.3. One kg of a diatomic gas is at a pressure of  The density of the gas is 4 kg/m³. What is the energy of the gas due to its thermal motion?

Sol:  
  

Directions: Question numbers 34, 35 and 36 are based on the following paragraph.

Two moles of helium gas are taken over the cycle ABCDA, as shown in the P-T diagram.

Q.4. Assuming the gas to be ideal the work done on the gas in taking it from A to B is:

1. 500 R
   
   
2. 200 R
   
   
3. 300 R
   
   
4. 400 R

Sol:    

Q.5. The work done on the gas in taking it from D to A is:

1.   + 690 R
   
   
2. – 414 R
   
   
3. + 414 R
   
   
4. – 690 R

Sol: