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A heat engine operating n between 227...

A heat engine operating n between ` 227^(@)` and ` 27^(@) C` absorbs 2 K a cal of heat from the ` 227^(@)` reservoir
reversibly per cycle . The amount of work done in one cycle is

A

0. 4 cal

B

0.8 cal

C

4 Kcal

D

87 Kcal

Text Solution

Verified by Experts

The correct Answer is:
B
`eta = 1 - (300)/(500) = 1 -0.6 -0.4`
`%eta= 40 =|W|/(q)xx 100`
`w = (40)/(100)xx2= 0.8 Kcal`
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