The machine which transfers heat from a lower temperature region to a higher temperature region on its own without the interference of any external agency is a
A
Perpetual motion machine of 1 st kind
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B
Perpetual motion machine of 2nd kind
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C
Perpetual motion machine of 3rd kind
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D
Perpetual motion machine of 4th kind
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Solution
The correct option is B Perpetual motion machine of 2nd kind Perpetual motion machine of 2nd kind is the machine which transfers heat from lower temperature region to higher temperature region on its own without the interference of any external