Work done on the gas or system in physics positive or negative

Question

I am dipanjali 
Iam confuse in this question . Help out

Aneesa Sherif · Answer

negative in physics and positive in chemistry

Gurugubelli Seethamma · Answer

phy work done on the system is - and che it's +

Uttam Singh · Answer

-ve

Sanjay Nahar · Answer

work done by gas is positive  in physics

Hepsylin Lawrence · Answer

work done on the system is negative and work done by the system is positive

Ravikumar Chodipalli · Answer

negative

Debashis Thakur · Answer

+

Shilpi Kumari · Answer

work done on system is positive Nd work done by system is negative(focus word-on/off only)

Tanisha Saraf · Answer

work done on a system is positive in chemistry n negative in physics

Mohammed Dilshad · Answer

in chemistry work done on the system is positive & in physics it's negative

Dar Nisar · Answer

dont be confused itz jux convention

Apurva Singha · Answer

phy me work done on the system is negative nd opp in chem

Safal Thapa · Answer

positive.....butinchemistry we say negative.......