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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCalorimetryMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

As an experimenting physicist, you have taken $1 kg$ of a solid at a temperature of $- 5^{\circ} C$ and heat it at a constant rate of $10 kJ/min$ . You record the temperature at different times and plot it in the graph. The graph is shown here. Neglect heat losses.

If we assume that the heat loss is not negligible, the actual specific heat capacity

Options:

Answer:

Solution:

If some heat is lost, the heat absorbed by the sample is less than the heat supplied:
$Q = m s Δ T + Q_{l oss}$
$s = \frac{Q - Q _{l oss}}{m Δ T} < s_{c a l c u l a t e d}$
This holds for both solid and liquid.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Calorimetry

⏱ 2mℹ️ Source: QB

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