PhysicsEasy148×since 2002Q7973A body takes 4 min. to cool from 61∘^\circ∘ C to 59∘^\circ∘ C. If the temperature of the surroundings is 30∘^\circ∘ C, the time taken by the body to cool from 51∘^\circ∘ C to 49∘^\circ∘ C is :A4 min.B3 min.C8 min.D6 min.Check answerSkip