TS EAMCET · Physics · Thermal Properties of Matter
The heat evolved for the rise of water when one end of the capillary tube of radius \(r\) is immersed vertically into water is (Assume surface tension \(=T\) and density of water to be p)
- A \(\frac{2 \pi T}{\rho g}\)
- B \(\frac{\pi T^2}{\rho g}\)
- C \(\frac{2 \pi T^2}{\rho g}\)
- D None of these
Answer & Solution
Correct Answer
(C) \(\frac{2 \pi T^2}{\rho g}\)
Step-by-step Solution
Detailed explanation
Water rise to height, \(h=\frac{2 T}{\rho g r}\) Potential energy of water column, \(U=\frac{m g h}{2}=\frac{2 \pi T^2}{\rho g}\) The work performed by force of surface tension is \(W=2 \pi r T h=\frac{4 \pi T^2}{\rho g}\) From conservation of energy the heat evolved,…
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
- \(\overrightarrow{\mathbf{A}}\) and \(\overrightarrow{\mathbf{B}}\) are two vectors of equal magnitudes and \(\theta\) is the angle between them. The angle between \(\overrightarrow{\mathbf{A}}\) or \(\overrightarrow{\mathbf{B}}\) with their resultant isTS EAMCET 2010 Easy
- An oscillating circuit consisting of a capacitor with capacitance \(C=10 \mu \mathrm{F}\), a coil with inductance \(L=6.0 \mu \mathrm{H}\) and active resistance \(R=10 \Omega\). The mean power that should be fed to the circuit to maintain undamped harmonic oscillations with an external driving power with \(50 \mathrm{~Hz}\) and a \(V_m\) of \(280 \mathrm{~V}\) isTS EAMCET 2018 Hard
- Consider a vessel filled with a liquid upto height The bottom of the vessel lies in the plane passing through the origin. The density of the liquid varies with -axis as . If and are the pressures at the bottom surface and top surface of the liquid, the magnitude of is :TS EAMCET 2018 Hard
- In \(p-n-p\) transistor, the collector current isTS EAMCET 2020 Medium
- A particle moves over a plane with a constant acceleration . At the time the velocity is The speed of the particle when it is displaced by parallel to the -axis is,TS EAMCET 2021 Medium
- The angle between force \(\vec{F}=3 \hat{i}+4 \hat{j}-5 \hat{k}\) and displacement \(\vec{d}=5 \hat{i}+4 \hat{j}+3 \hat{k}\) isTS EAMCET 2023 Medium
More PYQs from TS EAMCET
- A wheel of radius \(0.4 \mathrm{~m}\) can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of \(4 \mathrm{~kg}\) is hung. An angular acceleration of 8 rad- \(\mathrm{s}^{-2}\) is produced in it due to the torque. Then, moment of inertia of the wheel is \(\left(g=10 \mathrm{~ms}^{-2}\right)\)TS EAMCET 2009 Easy
- A metallic solid sphere is rotating about its diameter as axis of rotation. If the temperature is increased by \(200^{\circ} \mathrm{C}\), the percentage increase in its moment of inertia is (Coefficient of linear expansion of the metal \(=10^{-5} /{ }^{\circ} \mathrm{C}\) )TS EAMCET 2004 Easy
- A man of mass 60 kg is standing in a lift moving up with a retardation of \(2.8 \mathrm{~ms}^{-2}\). The apparent weight of the man isTS EAMCET 2025 Medium
- If of is completely destroyed in an atom bomb, then approximate total energy released is (given that the energy released per fission is )TS EAMCET 2021 Easy
- The sensitivity of a galvanometer is 60 division/A. When a shunt is used, its sensitivity becomes 10 division/A. If the galvanometer is of resistance \(20 \Omega\), the value of shunt used isTS EAMCET 2011 Medium
- \(F_{\mathrm{pp}}, F_{\mathrm{nn}}\) and \(F_{\mathrm{np}}\) are the nuclear forces between proton-proton, neutron-neutron and neutron-proton respectively. Then relation between them isTS EAMCET 2008 Easy