Signs of q, w and dU for a described process

1. A.
   $\Delta U > 0,q = 0,w > 0$
2. B.
   $\Delta U = 0,q = 0,w = 0$
3. C.
   $\Delta U < 0,q = 0,w > 0$
4. D.
   $\Delta U = 0,q < 0,w > 0$

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1. A.
   $q = + ve,w = 0,\Delta U = - ve$
2. B.
   $q = + ve,w = - ve,\Delta U = + ve$
3. C.
   $q = - ve,w = - ve,\Delta U = - ve$
4. D.
   $q = + ve,w = - ve,\Delta U = - ve$

Tap an option to check your answer.