COMEDK · Physics · 12. Thermal Properties of Matter
How much heat energy has to be supplied to 2 kg of ice so that it melts at \(0^{\circ} \mathrm{C}\) ? [latent heat of fusion of ice is \(3.35 \times 10^2 \mathrm{~kJ} \mathrm{Kg}^{-1}\)
- A \(3.35 \times 10^3 J\)
- B \(6.7 \times 10^3 \mathrm{~J}\)
- C \(3.35 \times 10^5 \mathrm{~J}\)
- D \(6.7 \times 10^5 \mathrm{~J}\)
Answer & Solution
Correct Answer
(D) \(6.7 \times 10^5 \mathrm{~J}\)
Step-by-step Solution
Detailed explanation
The heat energy \(Q\) required to melt a mass \(m\) of a substance at its melting point is given by the formula \(Q = m \times L\), where \(L\) is the latent heat of fusion. Given: Mass \(m = 2 \text{ kg}\) Latent heat of fusion…
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