JEE MAIN - Physics (2022 - 25th June Evening Shift - No. 5)
A copper block of mass 5.0 kg is heated to a temperature of 500$$^\circ$$C and is placed on a large ice block. What is the maximum amount of ice that can melt? [Specific heat of copper : 0.39 J g$$-$$1 $$^\circ$$C$$-$$1 and latent heat of fusion of water : 335 J g$$-$$1]
1.5 kg
5.8 kg
2.9 kg
3.8 kg
Explanation
$$mL = \Delta Q = ms\Delta T$$
$$ \Rightarrow m = {{5 \times 0.39 \times {{10}^3} \times 500} \over {335}}$$
$$ = 2.9$$ kg
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