AP EAMCET · PHYSICS · Thermal Properties of Matter
A calorimeter contains \(0.5 \mathrm{~kg}\) of water at \(30^{\circ} \mathrm{C}\). When \(0.3 \mathrm{~kg}\) of water at \(60^{\circ} \mathrm{C}\) is added to it, the resulting temperature is found to be \(40^{\circ} \mathrm{C}\). The water equivalent of the calorimeter is
- A \(0.25 \mathrm{~kg}\)
- B \(0.1 \mathrm{~kg}\)
- C \(0.2 \mathrm{~kg}\)
- D \(0.25 \mathrm{~kg}\)
Answer & Solution
Correct Answer
(B) \(0.1 \mathrm{~kg}\)
Step-by-step Solution
Detailed explanation
Temperature of cold water in calorimeter, \(T_1=30^{\circ} \mathrm{C}, m_1=0.5 \mathrm{~kg}=500 \mathrm{~g}\) Temperature of hot water, \(T_2=60^{\circ} \mathrm{C}\), \(m_2=0.3 \mathrm{~kg}=300 \mathrm{~g}\) Resulting temperature, \(T_3=40^{\circ} \mathrm{C}\) Let water…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- An iron sphere of mass \(20 \times 10^{-3} \mathrm{~kg}\) falls through a viscous liquid with terminal velocity \(0.5 \mathrm{~ms}^{-1}\). The terminal velocity (in \(\mathrm{ms}^{-1}\) ) of another iron sphere of mass \(54 \times 10^{-2} \mathrm{~kg}\) isAP EAMCET 2005 Medium
- A lift raises 50 passengers each having average weight \(600 \mathrm{~N}\) to a height of \(100 \mathrm{~m}\) at a constant speed in time \(t\). If the average power of \(15 \mathrm{~kW}\) is required by the lift, then the value of \(t\) in seconds isAP EAMCET 2022 Easy
- A Carnot heat engine absorbs 600 J of heat from a source at a temperature of \(127^{\circ} \mathrm{C}\) and rejects 400 J of heat to a sink in each cycle. The temperature of the sink isAP EAMCET 2025 Medium
- A rectangular loop of sides 25 cm and 10 cm carrying a current of 10 A is placed with its longer side parallel to a long straight conductor 10 cm apart carrying current 25 A. The net force on the loop isAP EAMCET 2024 Medium
- In the Uranium radioactive series, the initial nucleus is \({ }_{92}^{238} \mathrm{U}\) and final nucleus is \({ }_{82}^{206} \mathrm{~Pb}\). When the Uranium nucleus decays to lead, the number of \(\alpha\)-particles emitted is .......... and the number of \(\beta\)-particles emitted is ____.AP EAMCET 2020 Easy
- The ratio of de Broglie wavelengths associated with thermal neutrons at temperatures \(127^{\circ} \mathrm{C}\) and \(352^{\circ} \mathrm{C}\) isAP EAMCET 2025 Medium
More PYQs from AP EAMCET
- If some heat is given to a metal of mass 100 g, its temperature rises by \(20^{\circ} \mathrm{C}\). If the same heat is given to 20 g of water, the change in its temperature (in \({ }^{\circ} \mathrm{C}\) ) is (The ratio of specific heat capacities of metal and water is \(1: 10\) )AP EAMCET 2025 Easy
- ft.\left|z-\frac{1+3 i}{2}\right|=\frac{\sqrt{10}}{2}\right\}\)
If \(P, Q\) and \(R\) are points, respectively representing the complex numbers \(z, z e^{\frac{i \pi}{3}}\) and \(z\left(1+e^{\frac{i \pi}{3}}\right)\) in argand plane, then the area of the triangle \(P Q R\), isAP EAMCET 2019 Easy - Poly dispersity index of a polymer is 1.25 If \(\overline{\mathrm{M}}_{\mathrm{n}}\) is 800 , what is its \(\overline{\mathrm{M}}_{\mathrm{w}}\) ?AP EAMCET 2023 Hard
- What are the oxidation states of three atoms in moleculeAP EAMCET 2022 Medium
- The time period of a simple pendulum on the surface of the earth is T. The height above the surface of the earth at which the time period of the pendulum becomes \(2 \mathrm{~T}\) is (Radius of the earth \(=6400 \mathrm{~km}\) )AP EAMCET 2023 Medium
- The displacement of a particle of mass 2 g executing simple harmonic motion is \(x=8 \cos \left(50 t+\frac{\pi}{12}\right) m\), where \(t\) is time in second. The maximum kinetic energy of the particle isAP EAMCET 2024 Easy