A carnot engine takes 6000 cal of heat f...

A carnot engine takes 6000 cal of heat from a reservoir at `627^(@)C` and gives it to a sink at `27^(@)C`. The work done by the engine is

A

`1//5`

B

`2//3`

C

`2//5`

D

`3//7`

Verified by Experts

The correct Answer is:

B

`eta n=1-T_1/T_2`
`=1-(300)/(900)`
`eta=2/3`

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