Solve this following

Question:

Directions : Question number 1,2 and 3 are based on the following paragraph. Two moles of helium gas are taken over the cycle ABCDA, as shown in the $\mathrm{P}-\mathrm{T}$ diagram.

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

 

  1. $400 \mathrm{R}$

  2. $500 \mathrm{R}$

  3. $200 \mathrm{R}$

  4. 300


Correct Option: 1

Solution:

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