In a room, where the temperature is 30^{\circ} {C} a body cools from 61^{\circ} {C} to 59^{\circ} {C} in 4 {\min}. The time taken by the body to cool from 51^{\circ} {C} to 49^{\circ} {C} will be

BSc Nursing GNM 2020 Solved Paper

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In a room, where the temperature is 30∘C a body cools from 61∘C to 59∘C in 4min. The time taken by the body to cool from 51∘C to 49∘C will be

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