1.

A body takes 4 minutes to cool from \[{{100}^{o}}C\] to \[{{70}^{o}}C\]. To cool from \[{{70}^{o}}C\] to \[{{40}^{o}}C\] it will take (room temperature is \[{{15}^{o}}C\])                                              [MP PET 1995]

A.            7 minutes                              
B.            6 minutes
C.            5 minutes                              
D.            4 minutes
Answer» C.            5 minutes                              


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