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Heat Engines

During one cy...

Question

During one cycle of a heat engine $2000$ calories of heat is supplied and $1500$ calories rejected. The amount of work done equals:

A

2093 J

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B

4186 J

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C

1042 J

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D

0

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Solution

The correct option is D $2093 J$
Work done equals the difference of heat supplied to the heat lost.
$W = Q_{i n} - Q_{o u t}$
$= 2000 - 1500$
$= 500 c a l$
$= 4.186 \times 500 J$
$= 2093 J$

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