TS EAMCET · Physics · Kinetic Theory of Gases
A body cools from to in Calculate the time it takes to cool from to The temperature of the surrounding is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
In the first case, the average temperature of the liquid =70+402=55 °C. Excess temperature =55-20=35 °C dθ1dt=40-705=-6 °C minutes-1 -6=K×35 ...1 In the second case, the average temperature of liquid, =60+402=50oC . Excess temperature…
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 observer moves towards a stationary source of sound with a speed \(\frac{1}{5} t h\) that of sound. The frequency of the sound emitted by the source is \(f\). The apparent frequency recorded by the observer isTS EAMCET 2023 Easy
- Two blocks of equal masses are tied to the ends of a light string. The string passes over a mass less pulley fixed on frictionless surface as shown in the figure. The acceleration of the centre of mass of the blocks is ( \(g\) - acceleration due to gravity)
TS EAMCET 2023 Medium - In an experiment on photoelectric emission from a metallic surface, wavelength of incident light is \(2 \times 10^{-7} \mathrm{~m}\) and stopping potential is \(2.5 \mathrm{~V}\). The threshold frequency of the metal (in \(\mathrm{Hz}\) ) approximately (charge of electron \(e=1.6 \times 10^{-19} \mathrm{C}\), Planck's constant \(\left.h=6.6 \times 10^{-34} \mathrm{~J}-\mathrm{s}\right)\)TS EAMCET 2007 Easy
- Particles and their anti-particles haveTS EAMCET 2005 Medium
- A truck of mass 8 ton is carrying a block of mass 2 ton. If a breaking force of 25 kN is applied on the truck, then the frictional force acting on the block is
(Coefficient of static friction between the block and the truck is 0.3 )TS EAMCET 2025 Medium - A small object slides down with initial velocity equal to zero from the top of a smooth hill of height . The other end of the hill is horizontal and is at height as shown in the figure. The horizontal distance covered by the object from the end of the hill to the ground is
TS EAMCET 2022 Easy
More PYQs from TS EAMCET
- At what distance from a biconvex lens of the focal length \(F\), must be placed an object for the distance between the object and its real image to be minimal?TS EAMCET 2018 Easy
- A glass flask of volume one litre is filled completely with mercury at \(0^{\circ} \mathrm{C}\). The flask is now heated to \(100^{\circ} \mathrm{C}\). Coefficient of volume expansion of mercury is \(1.82 \times 10^{-4} /{ }^{\circ} \mathrm{C}\) and coefficient of linear expansion of glass is \(0.1 \times 10^{-4} /{ }^{\circ} \mathrm{C}\). During this process, amount of mercury which overflows isTS EAMCET 2013 Medium
- The height of water level is a tank of uniform crosssection is 5 m . The volume of the water leaked in 5 s through a hole of area \(2.4 \mathrm{~mm}^2\) made at the bottom of the tank is (Assume the level of the water in the tank remains constant and acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )TS EAMCET 2024 Easy
- A circular coil of area \(200 \mathrm{~cm}^2\) and 50 turns is rotating about its vertical diameter with an angular speed of \(40 \mathrm{rads}^{-1}\) in a uniform horizontal magnetic field of magnitude \(2 \times 10^{-2} \mathrm{~T}\). The maximum emf induced in the coil isTS EAMCET 2024 Easy
- An electric bulb, an open coil inductor, an ac source and a key are all connected in series to form a closed circuit. The key is closed and after some time an iron rod is inserted into the interior of the inductor, thenTS EAMCET 2025 Medium
- A tension of \(22 \mathrm{~N}\) is applied to a copper wire of cross-sectional area \(0.02 \mathrm{~cm}^2\) Young's modulus of copper is \(1.1 \times 10^{11} \mathrm{~N} / \mathrm{m}^2\) and Poisson's ratio 0.32 . The decrease in cross-sectional area will beTS EAMCET 2012 Medium