Q. An ideal gas expands in volume from $1 \times 10^{3}m^{3}$ to $1 \times 10^{- 2}m^{3}$ at 300 K against a constant pressure of $1 \times 10^{5}Nm^{- 2}.$ The work done is
A) 270 kJ
B) $- 900$ kJ
C) $- 900\$J
D) 900 kJ
Explanation
(c)
$W = - P\mathrm{\Delta}V = \text{-}1 \times 10^{5}\ (1 \times 10^{- 2} - 1 \times 10^{- 3})$
$= - 900$ J
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.