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The temperature of equal masses of three different liquids A, B and C are 12oC, 19oC and 28oC respectively. The temperature when A and B are mixed is 16oC and when B and C are mixed is 23oC. The temperature when A and C are mixed is
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Correct option is C
Heat gain = heat lost CA(16−12)=CB(19−16)⇒CACC=1516=54and CB(23−19)=CC(28−23)⇒CACC=54 ⇒CACC=1516 .............(i)If θ is the temperature when A and C are mixed then, CA(θ−12)=CC(28−θ)⇒CACC=28−θθ−12 …………(ii)On solving equation (i) and (ii), θ=20.2∘C.Similar Questions
A bullet of mass 5g , Travelling with a speed of 210 m/s , strikes a fixed wooden target . One half its kinetic energy is converted in to heat in the bullet while the other half is converted in to heat in the wood. The rise of temperature of the bullet if the specific heat of the material is 0.030 cal/ close to:
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