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Solution


Q.

Choose the correct statement for the work done in the expansion and heat absorbed or released when 5 litres of an ideal gas at 10 atmospheric pressure isothermally expands into vacuum until volume is 15 litres.                 [2024]
1 both the heat and work done will be greater than zero.  
2 heat absorbed will be less than zero and work done will be positive.  
3 work done will be zero and heat will also be zero.  
4 work done will be greater than zero and heat will remain zero.  

Ans.

(3)