Revered members,
Consider this scenario. A cylinder is fitted with a frictionless and free to move piston of area of cross-section A. Let a gas of volume V1 be enclosed in the cylinder. Now if we heat this enclosed gas its volume increases and the due to heating the piston moves up which is an indicator for decrease in pressure. But my book says, increase in volume due to temperature rise will take place at constant pressure equal to atmospheric pressure. I cant understand. How the pressure will remain constant, when the piston moves up?
Consider this scenario. A cylinder is fitted with a frictionless and free to move piston of area of cross-section A. Let a gas of volume V1 be enclosed in the cylinder. Now if we heat this enclosed gas its volume increases and the due to heating the piston moves up which is an indicator for decrease in pressure. But my book says, increase in volume due to temperature rise will take place at constant pressure equal to atmospheric pressure. I cant understand. How the pressure will remain constant, when the piston moves up?