In an Experiment to Verify... |JEE Main 2022 | Heat Transfer

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JEE MAIN 2022

24-06-22 S2

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In an experment ot verify Newton's law of cooling, a graph is plotted between, the temperature difference ( $\Delta T$ ) of the water and surroundings and time as shown in figure. The initial temperature of water is taken as $80^{\circ} \mathrm{C}$. The value of $t_2$ as mentioned in the graph will be $\_\_\_\_$ .

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