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PhysicsFluidPressureHard2 minPYQ_2021
PhysicsHardmultiple choice

A cylindrical tube, with its base as shown in the figure., is filled with water. It is moving down with a constant acceleration a along a fixed inclined plane with angle θ=45°. P1 and P2 are pressures at point 1 and 2, respectively, located at the base of the tube. Let β=P1−P2ρgd, where ρ is density of water, d is the inner diameter of the tube and g is the acceleration due to gravity. Which of the following statement(s) is (are) correct?

Options:(select one or more)

Answer:
A, C
Solution:

Given,

β=P1−P2ρgd       ...1

Here we can write now,

P3=P2+ρg−a2d

P1=P3−ρa2d

P1=P2+ρgd−2ρad

P1=P2+ρg−a2d−ρa2d

P1−P2ρdg=1−2ag

Compare it with given equation 1,

β=1−2ag

Now check the options,

If a=g2, β=0.

If a=g2, β=2-12.

Option 1and 3 are correct

Stream:JEE_ADVSubject:PhysicsTopic:FluidSubtopic:Pressure
⏱ 2mℹ️ Source: PYQ_2021

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