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An object kept in a large room having ai...

An object kept in a large room having air temperature of `25^@C` takes 12 minutes to cool from `80^@C` to `70^@C`. The time taken to cool for the same object from `70^@C` to `60^@C` would be nearly,

A

15 min

B

10 min

C

12 min

D

20 min

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