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JEE Main202528 Jan 2025Morning ShiftPhysicsMechanical Properties of FluidsActual

In the experiment for measurement of viscosity ' ' of given liquid with a ball having radius R , consider following statements. A. Graph between terminal velocity V and R will be a parabola. B. The terminal velocities of different diameter balls are constant for a given liquid. C. Measurement of terminal velocity is dependent on the temperature. D. This experiment can be utilized to assess the density of a given liqu

Options

  1. A_ A , B and E Only
  2. BB, D and E Only
  3. C^ A, C and D Only
  4. DC, D and E Only

Correct answer

C. ^ A, C and D Only

Step-by-step solution

The terminal velocity of ball of radius R inside a liquid of viscosity can be written as V_T= 2 R^2 g n ( - ) , where is the density of ball and is the density of the liquid. Hence, A is correct since V_T R^2 gives a parabola on a graph C is correct since V_T 1 and varies with temperature D is correct since V_T ( - ) i.e., varies with density of liquid.

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