A thermometer reads and is suddenly placed in an ice bath at

MATHEMATICS · Single correct · CBSE · Mathematics · Differential Equations · Differential Equations

Problem

A thermometer reads

100^{\circ}\text{C}

and is suddenly placed in an ice bath at

0^{\circ}\text{C}

. Two minutes later, it reads

40^{\circ}\text{C}

. How many additional minutes (to the nearest tenth) will it take for the thermometer to read

10^{\circ}\text{C}

? (a)

2.6\text{ min}

(b)

3.0\text{ min}

(c)

5.0\text{ min}

(d)

4.6\text{ min}