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Inverted U-tube manometer is used for measuring pressure differences in liquids. The space above the liquid in the manometer is filled with air which can be admitted or expelled through the tap on the top, in order to adjust the level of the liquid in the manometer.
Inverted U-tube manometer is used for measuring pressure differences in liquids. The space above the liquid in the manometer is filled with air which can be admitted or expelled through the tap on the top, in order to adjust the level of the liquid in the manometer. Equating the pressure at the level XX'(pressure at the same level in a continuous body of static fluid is equal), For the left hand side: Px = P1 - rg(h+a) For the right hand side: Px' = P2 - (rga + rmgh) Since Px = Px' P1 - rg(h+a) = P2 - (rga + rmgh) P1 - P2 = (r - rm)gh If the manometric fluid is choosen in such a way that rm << r then, P1 - P2 = rgh. For inverted U - tube manometer the manometric fluid is usually air.
yes it is seen inverted
we do get inverted image at the ratina. But this inverted image itself is being treated as errected by our mind.
For a convex lens, if you trace out the path of the rays as they are refracted through the lens, you'll see that the inverted image gets reversed horizontally as well as vertically (in other words, the "inverted" image is really a 180 degree rotation about the axis through the center of the lens).
the fluid level in manometer will rise through an inclined line rather than vertical line. So when ever there is slight variation in pressure the manometer (inclined) will be able read it. The pressure drop is given by P=h*density*g*sin(angle).
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The image is inverted when it reaches the retina. The brain then interperets the image as right-side-up.