A diatomic gas which has initial volume of 10 litre is isothermally compressed to 1/15th of its original volume where initial pressure is 105 Pascal. If temperature is 27°C then find the work done by gas.
(a) -2.70 x 103 J
(b) 2.70 x 103 J
(c) -1.35 x 103 J
(d) 1.35 x 103 J