NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Mechanical Properties of Fluids
NEET · Physics · Mechanical Properties of Fluids
Why should you blow over, not under, a piece of paper to keep it...
Why should you blow over, not under, a piece of paper to keep it horizontal?
Options
- ABlowing over the paper increases air velocity and lowers pressure above it.
- BBlowing under the paper creates a downward force due to increased air pressure.
- CBlowing under the paper increases air velocity and raises pressure above it.
- DBlowing over the paper creates a vacuum effect, keeping it horizontal.
Correct answer
A. Blowing over the paper increases air velocity and lowers pressure above it.
Step-by-step solution
Correct Option is : (A)
Blowing over the paper increases air velocity and lowers pressure above it.
Blowing over the paper increases air velocity and lowers pressure above it.