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  • If Q amount of heat is given to a gas , work done by the gas is W , then specific heat will be positive if Option: 1 Q = W <

If Q amount of heat is given to a gas , work done by the gas is W , then specific heat will be positive if 

Option: 1

Q = W 


Option: 2

Q > W 


Option: 3

Q < W 


Option: 4

In all the cases 


Answers (1)

As we have learned

If Delta theta Positive -

C=\frac{Q}{m.\Delta \theta}

- wherein

The fall in temperature of the gas due to expansion would be smaller than the rise in temperature of the gas due to heat supplied.

 

 If Q > W 

\Delta U > O

Temprature will rise 

\Delta T > O

C is positive.

Posted by

Ramraj Saini

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