Equation of Continuity
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360918 Assertion :
The velocity increases. when water flowing in broader pipe enter a narrow pipe.
Reason :
According to equation of continuity, product of area and velocity is constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360919 Horizontal tube of non-uniform cross-section has radii of \(0.1\;m\) and \(0.05\;m\) respectively at \(M\) and \(N\). For a streamline flow of liquid the rate of liquid flows is
supporting img

1 continuously changes with time
2 greater at \(M\) than at \(N\)
3 greater at \(N\) than at \(M\)
4 same at \(M\) and \(N\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360920 In the water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column. i.e., the area of cross-section of the liquid column decreases as it moves down at the mouth of the tap the area of cross-section is \(2.5\;c{m^2}\) and the speed of water is \(3\;m{\rm{/}}s\). The area of cross-section of the water column \(80\;cm\) below the tap is:
supporting img

1 \(2\;c{m^2}\)
2 \(1.5\;c{m^2}\)
3 \(1\;c{m^2}\)
4 \(0.5\;c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360921 An L-shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is \(v\), then
supporting img

1 The water in the tube rises to height \(\dfrac{v^{2}}{2 g}\)
2 The water in the tube rises to height \(\dfrac{g}{2 v^{2}}\)
3 The water in the tube does not rise at all
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360918 Assertion :
The velocity increases. when water flowing in broader pipe enter a narrow pipe.
Reason :
According to equation of continuity, product of area and velocity is constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360919 Horizontal tube of non-uniform cross-section has radii of \(0.1\;m\) and \(0.05\;m\) respectively at \(M\) and \(N\). For a streamline flow of liquid the rate of liquid flows is
supporting img

1 continuously changes with time
2 greater at \(M\) than at \(N\)
3 greater at \(N\) than at \(M\)
4 same at \(M\) and \(N\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360920 In the water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column. i.e., the area of cross-section of the liquid column decreases as it moves down at the mouth of the tap the area of cross-section is \(2.5\;c{m^2}\) and the speed of water is \(3\;m{\rm{/}}s\). The area of cross-section of the water column \(80\;cm\) below the tap is:
supporting img

1 \(2\;c{m^2}\)
2 \(1.5\;c{m^2}\)
3 \(1\;c{m^2}\)
4 \(0.5\;c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360921 An L-shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is \(v\), then
supporting img

1 The water in the tube rises to height \(\dfrac{v^{2}}{2 g}\)
2 The water in the tube rises to height \(\dfrac{g}{2 v^{2}}\)
3 The water in the tube does not rise at all
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360918 Assertion :
The velocity increases. when water flowing in broader pipe enter a narrow pipe.
Reason :
According to equation of continuity, product of area and velocity is constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360919 Horizontal tube of non-uniform cross-section has radii of \(0.1\;m\) and \(0.05\;m\) respectively at \(M\) and \(N\). For a streamline flow of liquid the rate of liquid flows is
supporting img

1 continuously changes with time
2 greater at \(M\) than at \(N\)
3 greater at \(N\) than at \(M\)
4 same at \(M\) and \(N\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360920 In the water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column. i.e., the area of cross-section of the liquid column decreases as it moves down at the mouth of the tap the area of cross-section is \(2.5\;c{m^2}\) and the speed of water is \(3\;m{\rm{/}}s\). The area of cross-section of the water column \(80\;cm\) below the tap is:
supporting img

1 \(2\;c{m^2}\)
2 \(1.5\;c{m^2}\)
3 \(1\;c{m^2}\)
4 \(0.5\;c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360921 An L-shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is \(v\), then
supporting img

1 The water in the tube rises to height \(\dfrac{v^{2}}{2 g}\)
2 The water in the tube rises to height \(\dfrac{g}{2 v^{2}}\)
3 The water in the tube does not rise at all
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360918 Assertion :
The velocity increases. when water flowing in broader pipe enter a narrow pipe.
Reason :
According to equation of continuity, product of area and velocity is constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360919 Horizontal tube of non-uniform cross-section has radii of \(0.1\;m\) and \(0.05\;m\) respectively at \(M\) and \(N\). For a streamline flow of liquid the rate of liquid flows is
supporting img

1 continuously changes with time
2 greater at \(M\) than at \(N\)
3 greater at \(N\) than at \(M\)
4 same at \(M\) and \(N\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360920 In the water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column. i.e., the area of cross-section of the liquid column decreases as it moves down at the mouth of the tap the area of cross-section is \(2.5\;c{m^2}\) and the speed of water is \(3\;m{\rm{/}}s\). The area of cross-section of the water column \(80\;cm\) below the tap is:
supporting img

1 \(2\;c{m^2}\)
2 \(1.5\;c{m^2}\)
3 \(1\;c{m^2}\)
4 \(0.5\;c{m^2}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360921 An L-shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is \(v\), then
supporting img

1 The water in the tube rises to height \(\dfrac{v^{2}}{2 g}\)
2 The water in the tube rises to height \(\dfrac{g}{2 v^{2}}\)
3 The water in the tube does not rise at all
4 None of these