Question

A fixed mass 'm' of a gas is subjected to the transformation of states from K to L to M to N and back to K as shown in the figure.

The pair of isochoric processed among the transformation of states is:

• A. K to L and L to M
• B. L to M and N to K
• C. L to M and M to N
• D. M to N and N to K

Answer 1

The correct option is B L to M and N to K

For a given mass of gas (constant n) volume increases from K to L at constant P due to heating i.e., isobaric process. Pressure decreases from L to M at constant V due to cooling i.e., isochoric process. Volume decreases from M to N at constant P due to cooling i.e., Isobaric process. Pressure increases from N to K at constant V due to heating i.e., isochoric process. Thus isochoric process (constant V) are L to M and N to K.