STANDARDPhysics-Thermodynamics

STANDARD Physics Heat Transfer MCQ Question

Type: MCQ-numerical-Medium-Class 11

If 10 g of ice is added to 40 g of water at 15°C, then the temperature of the mixture is (specific heat of water = 4.2 × 10³ J kg⁻¹ K⁻¹, Latent heat of fusion of ice = 3.36 × 10⁵ J kg⁻¹)

A

15°C

B

12°C

C

10°C

D

0°C

Correct Answer

Option D

Detailed Explanation

Heat lost by water to come from 15°C to 0°C is 2520 J. Heat required to convert 10 g ice into 10 g water at 0°C is 3360 J. Since H₂ > H₁, the whole ice will not be converted into water, and the temperature of the whole water will be 0°C. Therefore, the temperature of the mixture is 0°C.

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