Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCalorimetryMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

Given a liquid initially at -20°C, warmed in a 2520 W microwave oven. Its mass is 1 kg and specific heat s = 2(T - 253) cal/(g K), where T is in kelvin. Take T = θ + 273, where θ is in °C.

If 1 kg water at temperature 50°C is added with a liquid of mass 1 kg at 20°C, with specific heat 2 cal/gm °C, then final temperature of the mixture is (in °C) ?

Options:

Answer:

Solution:

Heat gain = Heat loss

$2 (T - 20) = 50 - T$

$2 T - 40 = 50 - T$

$3 T = 90$

$T = 3 0^{\circ} C$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Calorimetry

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...