WBCS.LIVE practice question

According to Stokes' Law, the terminal velocity of a small spherical body falling through a viscous fluid is directly proportional to what?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Its radius
  2. The square of its radius
  3. Its mass
  4. The square root of its radius

Correct answer and explanation

Correct answer: The square of its radius

Explanation: āœ… Correct Answer: B) The square of its radius šŸ“š Explanation: Stokes' Law states that the terminal velocity of a sphere falling in a viscous fluid is directly proportional to the square of its radius (Vt∝r2). This means that a larger drop of water or a heavier spherical object will fall significantly faster through the air or liquid than a smaller one.