If the radius of a droplet is doubled, terminal velocity will
Correct answer: C. Increase 4 times
- A. Increase twice
- B. Increase thrice
- C. Increase 4 times
- D. Same
Explanation
The terminal velocity of a droplet is directly proportional to the square of its radius. If the radius of a droplet is doubled, the terminal velocity will increase by a factor of 4.
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About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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