question_answer

A carnot engine operation between temperatures \[{{T}_{1}}\] and \[{{T}_{2}}\] has efficiency\[\frac{1}{6}\]. When \[{{T}_{2}}\] is lowered by 62 K, its efficiency increases to \[\frac{1}{3}\]. Then \[{{T}_{1}}\] and \[{{T}_{2}}\] are respectively                                                        [AIEEE 2011]

A)  310 K and 248 K

B)       372 K and 310 K

C)  372 K and 330 K

D)       330 K and 268 K

Correct Answer: B

Solution :

[b]

Also,

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or