Question bank/JEE Main/Physics

A mass of material exists in its solid form at its melting
temperature 10°C. The following processes then occur to the material:
Process-1: An amount of thermal energy Q is added to the material
and [IMAGE] of the material melts.
Process-2: An identical additional amount of thermal energy Q is
added to the material and the material is now a liquid at 50°C.
What is the ratio of the latent heat of fusion to the specific heat of
the liquid for this material?

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[IMAGE] mL = Q
Q = [IMAGE] + mS × 40
[IMAGE] = 4mS
[IMAGE] = 80

Source: Grass-G / P-01 Physics Paper-01_Update.docx