Question

In the experiment for measurement of viscosity \( \eta \) of a 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 liquid. 
E. If balls are dropped with some initial speed, the value of \( \eta \) will change.

• A. \(B\), \(D\) and \(E\) Only
• B. \(C\), \(D\) and \(E\) Only
• C. \(A\), \(B\) and \(E\) Only
• D. \(A\), \(C\) and \(D\) Only

Hint:

Understanding the physical principles behind measurements can help clarify which variables influence the results in experimental setups.

Answer 1

The Correct Option is B

Statement Analysis:
A: Incorrect. The graph represents a complex function of radius and viscosity, not a parabola.
B: Incorrect. Terminal velocity is influenced by ball size and density.
C: Correct. Viscosity and terminal velocity are dependent on temperature.
D: Correct. Changes in terminal velocity can indicate variations in liquid density.
E: Correct. Initial speed impacts drag force and settling time, thereby affecting measured viscosity.