An ideal gas heat engine operates in Carnot cycle between

An ideal gas heat engine operates in Carnot cycle between 227°C and 127°C. It absorbs 6 × 10⁴ cals of heat at higher temperature. Amount of heat converted to work is

We know that efficiency of carnot engine

= 1 -	T₂	= 1 -	400	=	1
	T₁		500		5

[∵ T₁ = (273 + 227)K = 500 K and T₂ = (273 + 127)K = 400 K]

Efficiency of Heat engine =	Work output
	Heat input

or ,	1	=	Work output
	5		6 × 10⁴

⇒ work output = 1.2 × 10⁴ cal