1.

The temperature `T_(1) and T_(2)` of heat reservoirs in the ideal carnot engine are `15000^(@)C` and `500^(@)C` respectivley. If `T_(1)` increases by `100^(@)C`, what will be the efficiency of the engine?A. `62%`B. `59%`C. `95%`D. `100%`

Answer» Correct Answer - B
Here, `T_(1)= 1500^(@)C+100^(@)C= 1600^(@)C`
`=1600+273= 1873K`
`T_(2)= 500^(@)C= 500+273= 773K`
As `eta=1 -(T_(2))/(T_(1))= 1- (773)/(1873)= (1100)/(1873)`
`eta= (1100)/(1873)xx100%= 59%`


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