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Two Carnot engines A and B are operated ...

Two Carnot engines A and B are operated is succession. The first one A receives heat from a source at `T_(1)=800K` and rejects to a sink at `T_(2)K`. The second engine B receives hence rejected by the first engine and rejects the another sink at `T_(3)`=300K. If the efficiencies of two engines are equal, then the value of `T_(2)` is

A

489.4K

B

469.4K

C

449.4K

D

429.4K

Text Solution

Verified by Experts

The correct Answer is:
A
`1-(T_(2))/(T_(1)=1-(T_(3))/(T_(2))`
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