A cup of tea cools from to in one minute

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A cup of tea cools from

80^\circ\text{C}

60^\circ\text{C}

in one minute. The ambient temperature is

30^\circ\text{C}

. In cooling from

60^\circ\text{C}

50^\circ\text{C}

. It will take : (A) 50 s (B) 90 s (C) 60 s (D) 48 s