A Carnot engine operating between temperatures T1 and T2 has efficiency 16. When T2 is lowered by 62 K, its efficiency 6 increases to 13. Then T1 and T2 are, respectively :
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a
310K and 248K
b
372 K and 310 K
c
372 K and 330 K
d
330 K and 26 8 K
answer is B.
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Detailed Solution
η1=16=1-T2T1⇒T2T1=56 ⇒ η2=13=1-T2-62T1 ⇒ T2=310 K and T1=372 K