An ideal gas heat engine operates in a Carnot cycle between `27^(@)C` and `127^(@)C`. It absorbs `6 kcal` at the higher temperature. The amount of heat (in kcal) converted into work is equal to

Options

A. `3.5`
B. `1.6`
C. `1.2`
D. `4.8`

Answer

C

Explanation

Efficiency of a Carnot engine is given by
`eta=1-(T_2)/(T_1)`
or `W/Q = 1-(T_2)/(T_1)implies W/6=1-((273+27))/((273+127))`
`implies W = 1.2 kcal`.