Question

When we blow air in horizontal direction over the open end of a straw kept vertically immersed in
water then
[ ]
a) water spray coming out of the vertical straw
b) water level decreasing in the vertical straw
c) water level remain unchanged in the vertical straw
d) none of these​

Answer 1

Answer:

b) water level decreasing in the vertical straw

Explanation:

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Answer 2

At the point when we blow air in flat course over the open end of a straw kept upward submerged in water then (a)Water shower emerging from the vertical straw.

PROCEDURE:

• At the point when air is blown through the flat piece of the straw, the air from the upward piece of the straw ascents up with force.
• This diminishes the pneumatic force in the upward piece of the straw. Subsequently, water ascends and emerges alongside the blow.
• We realize that moving air has a lower strain than static air. Thus, when you blow over a hot wet surface, you make an area of lower strain than usual(static air).
• This makes a simplicity for the water, or any fluid on a superficial level, to switch over completely to vaporous structure promptly.

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