We use cookies to improve your experience and understand how Examtube is used. You can accept analytics cookies or continue with essential cookies only.
Privacy policy3 public questions tagged with this topic.
Terminal velocity (v∝(mg−Fb)/6πηa) depends on weight minus buoyant force. A heavier object has a greater net downward force, increasing its terminal velocity compared to a lighter object of the same size.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
Viscosity, the internal friction between fluid layers moving at different velocities, resists relative motion, causing a shear stress proportional to the velocity gradient, as seen in Stokes’ law. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Viscosity. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
When the viscous force (from Stokes’ law) plus buoyant force equals the gravitational force, the net force becomes zero, and the object reaches terminal velocity, moving at a constant speed, as explained in the chapter.
Ref: Halliday & Resnick, Fundamentals of Physics, 11th ed., Chapter 13: Gravitation.
This page is supported by advertisements. An ad blocker is stopping those ads from loading, so we cannot show the rest of the page yet. Pause the blocker for this site, then continue. We will check again automatically.
You can keep using this site after advertisements are allowed to load.
