A body cools from 80^°C to 60^°C in 5 minutes. The temperature of… | JEE Main 2023 Physics PYQ

MCQMediumJEE Main 2023 · 12 April, Shift 1Heat Transfer (Conduction, Convection, Radiation)

A body cools from $80^{\circ}\text{C}$ to $60^{\circ}\text{C}$ in $5$ minutes. The temperature of the surrounding is $20^{\circ}\text{C}$ . The time it takes to cool from $60^{\circ}\text{C}$ to $40^{\circ}\text{C}$ is:

A
$500\,\text{s}$ .
B
$\frac{25}{3}$ s.
C
$450\,\text{s}$ .
D
$420\,\text{s}$ .

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