Discussion
Assertion (A): Stokes law cannot be used for raindrops.
Reason (R): Their Reynolds number is far too large for the creeping flow assumption to hold.
Answer: D
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. Stokes law assumes creeping flow, valid only while the Reynolds number is well below one. A millimetre raindrop has a Reynolds number in the hundreds, with a separated wake behind it, so the drag is far greater than Stokes predicts and empirical relations must be used.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development