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Most Important Selected Qs for JEE AdvancedPhysicsThermal Properties of Matter

Two cylindrical vessels, each having length 10 m and area of cross-sectional area of 1 ~m ^2 , are filled with water and rotated with angular speed =20 rad / s . Then, which of the following statement is correct?

Options

  1. AIf both vessels are stopped suddenly, water in vessel A will be at higher temperature.
  2. BIf both vessels are stopped suddenly, water in vessel B will be at higher temperature
  3. CChange in temperature of water in vessel A is 1.58^ C
  4. DChange in temperature of water in vessel A is 1.3^ C .

Correct answer

C. Change in temperature of water in vessel A is 1.58^ C

Step-by-step solution

A has higher kinetic energy than B . 1 3 ~mL ^2 ^2= mS ~T T = L ^2 ^2 3 ~s = 10^2 20^2 3 4.2 10^3 = 20 3 4.2 =1.58^

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