An object is cooled from 75^(@)C to 65^(...

An object is cooled from `75^(@)C` to `65^(@)C` in 2 min in a room at `30^(@)C`. The time taken to cool the same object from `55^(@)C` to `45^(@)C` in the same room is

5 min

3 min

4 min

2 min

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