Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCalorimetryMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

The figure below shows a plot of temperature vs. heat energy supplied to $1.00 kg$ of some substance. The substance has melting point of $- 10. 0^{\circ} C$ and is a gas at temperatures above $20. 0^{\circ} C$ .

The Latent heat of fusion for the substance is:

Options:

Answer:

Solution:

The melting plateau endpoints are:
$Q_{1} = 6 \times 1 0^{3} cal$
$Q_{2} = 106 \times 1 0^{3} cal$
$(106 - 6) \times 1 0^{3} = m L$
$L = \frac{1 0 ^{5}}{1 0 ^{3}} cal/gm$
$L = 100 cal/gm$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Calorimetry

⏱ 2mℹ️ Source: QB

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