3. When we blow over a paper strip it goes up ward as shown in the figure given below, why?
Answers
Answered by
0
Answer:
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Explanation:
A. Blowing over the paper reduces the air pressure above the strip
B.
Blowing over the paper increases the air pressure above the strip
C.
None of these is a correct reason
D.
The strip will not go upward at all
Answer
Answered by
1
Answer:
Due to change in air pressure across the paper strip
above pressure is lowered and hence it move upwards
Explanation:
When we blow air above the paper strip, low pressure is created above the strip, because high speed winds are always accompanied by reduced air pressure. Therefore, because of the higher pressure below the strip it is pushed upwards
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