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General
Easy
Question
Water flows through a frictionless duct with a cross-section varying as shown in figure. Pressure p at points along the axis is represented by:
The correct answer is:
Related Questions to study
physics-
A uniform wire having mass per unit length is placed over a liquid surface. The wire causes the liquid to depress by 
as shown in figure, then the value of surface tension of liquid is (neglect end effect):
A uniform wire having mass per unit length is placed over a liquid surface. The wire causes the liquid to depress by as shown in figure, then the value of surface tension of liquid is (neglect end effect):
physics-General
physics-
A conical block, floats in water with 90% height immersed in it. Height h of the block is equal to the diameter of the block i.e. 20 cm the mass to be kept on block, so that the block just floats at the surface of water is
A conical block, floats in water with 90% height immersed in it. Height h of the block is equal to the diameter of the block i.e. 20 cm the mass to be kept on block, so that the block just floats at the surface of water is
physics-General
physics-
A block A of mass 10 kg, connected to another hollow block B of same size and negligible mass, by a spring of spring constant 500 N/m, floats in water as shown in the figure. The compression in the spring is block A just touch the upper surface :
A block A of mass 10 kg, connected to another hollow block B of same size and negligible mass, by a spring of spring constant 500 N/m, floats in water as shown in the figure. The compression in the spring is block A just touch the upper surface :
physics-General
physics-
The figure shows a semi-cylindrical massless gate (of width R) pivoted at the point O holding a stationary liquid of density ρ. A horizontal force F is applied at its lowest position to keep it stationary. The magnitude of the force is:
The figure shows a semi-cylindrical massless gate (of width R) pivoted at the point O holding a stationary liquid of density ρ. A horizontal force F is applied at its lowest position to keep it stationary. The magnitude of the force is:
physics-General
physics-
Net magnetic field at the center of the circle o due to a current through loop ABC as shown in figure is 
Net magnetic field at the center of the circle o due to a current through loop ABC as shown in figure is
physics-General
physics-
A positively charged particle enters at the middle as shown in Fig. with speed 5 10 m/s will bend
A positively charged particle enters at the middle as shown in Fig. with speed 5 10 m/s will bend
physics-General
physics-
Two very thin metallic wires placed along X and Y axes carry equal currents as shown AB and CD are lines at 45
with the axes having origin at O the magnetic field will be zero on the line
Two very thin metallic wires placed along X and Y axes carry equal currents as shown AB and CD are lines at 45 with the axes having origin at O the magnetic field will be zero on the line
physics-General
physics-
A liquid stands at the same level in the U-tube when at rest. If areas of cross-section of both the limbs are equal, the difference in heights h of the liquid in the two limbs of U-tube, when the system is given an acceleration a in horizontal direction as shown, is
A liquid stands at the same level in the U-tube when at rest. If areas of cross-section of both the limbs are equal, the difference in heights h of the liquid in the two limbs of U-tube, when the system is given an acceleration a in horizontal direction as shown, is
physics-General
physics-
A small spherical solid ball is dropped in a viscous liquid. Its journey in the liquid is best described in the figure drawn by:
A small spherical solid ball is dropped in a viscous liquid. Its journey in the liquid is best described in the figure drawn by:
physics-General
physics-
On an inclined plane, making an angle . With horizontal, a trolley containing a liquid placed on it, are stationary then:
On an inclined plane, making an angle . With horizontal, a trolley containing a liquid placed on it, are stationary then:
physics-General
physics-
A cylindrical vessel contains a liquid of density of 
upto a height 
The liquid is closed by a piston of mass 
and area of cross section A. There is a small hole at the bottom of the vessel. The speed v with which the liquid comes out of the hole
A cylindrical vessel contains a liquid of density of upto a height The liquid is closed by a piston of mass and area of cross section A. There is a small hole at the bottom of the vessel. The speed v with which the liquid comes out of the hole
physics-General
physics-
A long straight thin conductor has a current of ’i’ ampere. The magnetic induction B away from the conductor at a distance ‘r’ from its axis varies as shown in
A long straight thin conductor has a current of ’i’ ampere. The magnetic induction B away from the conductor at a distance ‘r’ from its axis varies as shown in
physics-General
physics-
A solid ball having volume V and density floats at the interface of two immiscible liquids as shown in figure. The densities of the upper and the lower liquids are 
and 
respectively, such that 
The fraction of the volume of the ball in the lower liquid is
A solid ball having volume V and density floats at the interface of two immiscible liquids as shown in figure. The densities of the upper and the lower liquids are and respectively, such that The fraction of the volume of the ball in the lower liquid is
physics-General
physics-
A massless rod of length 1 m is hanged from the ceiling at one end and the other end is connected to the weight W. Cross-sectional area of the wire is 
With reference to the above graph, Young’s modulus of the material of the wire 
is
A massless rod of length 1 m is hanged from the ceiling at one end and the other end is connected to the weight W. Cross-sectional area of the wire is With reference to the above graph, Young’s modulus of the material of the wire is
physics-General
physics-
The position vector 
and linear momentum
are 
and 
the angular momentum vector is
perpendicular to
The position vector and linear momentum are and the angular momentum vector is perpendicular to
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