Q1.Whenweblowoverapaperstripitgoesupwardasshowninthefiguregivenbelow.why?
(a)Blowingoverthepaperreducestheairpressureabovethestrip
(b)Blowingoverthepaperincreasestheairpressureabovethestrip
(c)Noneoftheseisacorrectreason
(d)Thestripwillnotgoupwardatall
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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 air pressure below the strip, it is pushed upwards.
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