ICSE /Class 9
Physics MCQ Based On Change of pressure with depth
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ICSE Class 9 Physics Change of pressure with depth
Pascal's Principle states that any pressure applied to an enclosed fluid is transmitted undiminished to every point of the fluid.
Air is so compressible that its density has its highest value near the Earth’s surface and declines rapidly with altitude.
The salty water in the lake has a higher density, so the pressure exerted from water is high.
The atmospheric pressure is on both sides of the dam, so this atmospheric pressure cancels out. Therefore is no net force on the dam due to atmospheric pressure.
Mercury has a high density than water.
Compare the densities of both.
The ideal gases have molecular volume and show no attraction between the molecules at any distance while the real gas molecules have the volume and show attraction at short distances.
Pressure of fluid.
Pressure x Volume = Moles x Ideal Gas Constant x Temperature
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