Physics-
General
Easy
Question
Figure shows a siphon. Choose the wrong statement
- Siphon works when
> 0
- Pressure at point 2 is
- Pressure at point 3 is
- None of the above ( = atmospheric pressure)
> 0
= atmospheric pressure)
The correct answer is: None of the above ( = atmospheric pressure)
Related Questions to study
physics-
The spring balance A reads 2 kg with a block m suspended from it. A balance B reads 5 kg when a beaker with liquid is put on the pan of the balance. The two balances are now so arranged that the hanging mass is inside the liquid in the beaker as shown in the figure in this situation
The spring balance A reads 2 kg with a block m suspended from it. A balance B reads 5 kg when a beaker with liquid is put on the pan of the balance. The two balances are now so arranged that the hanging mass is inside the liquid in the beaker as shown in the figure in this situation
physics-General
physics-
The vessel shown in the figure has two sections. The lower part is a rectangular vessel with area of cross-section A and height h. The upper part is a conical vessel of height h with base area ‘A’ and top area ‘a’ and the walls of the vessel are inclined at an angle 30° with the vertical. A liquid of density r fills both the sections upto a height 2h. Neglecting atmospheric pressure.
The vessel shown in the figure has two sections. The lower part is a rectangular vessel with area of cross-section A and height h. The upper part is a conical vessel of height h with base area ‘A’ and top area ‘a’ and the walls of the vessel are inclined at an angle 30° with the vertical. A liquid of density r fills both the sections upto a height 2h. Neglecting atmospheric pressure.
physics-General
physics-
A soap bubble has radius R and thickness d (<< R) as shown. It colapses into a spherical drop. The ratio of excess pressure in the drop to the excess pressure inside the bubble is
A soap bubble has radius R and thickness d (<< R) as shown. It colapses into a spherical drop. The ratio of excess pressure in the drop to the excess pressure inside the bubble is
physics-General
physics-
A liquid is filled in a spherical container of radius R till a height h. At this positions the liquid surface at the edges is also horizontal. The contact angle is
A liquid is filled in a spherical container of radius R till a height h. At this positions the liquid surface at the edges is also horizontal. The contact angle is
physics-General
physics-
A spherical ball of density r and radius 0.003m is dropped into a tube containing a viscous fluid filled up to the 0 cm mark as shown in the figure. Viscosity of the fluid = 1.260 Nm–2 and its density 
L= 2 = 1260 kgm–3. Assume the ball reaches a terminal speed by the 10 cm mark. The time taken by the ball to traverse the distance between the 10 cm and 20 cm mark is
(g = acceleration due to gravity = 10 ms–2)
A spherical ball of density r and radius 0.003m is dropped into a tube containing a viscous fluid filled up to the 0 cm mark as shown in the figure. Viscosity of the fluid = 1.260 Nm–2 and its density L= 2 = 1260 kgm–3. Assume the ball reaches a terminal speed by the 10 cm mark. The time taken by the ball to traverse the distance between the 10 cm and 20 cm mark is
(g = acceleration due to gravity = 10 ms–2)
physics-General
physics-
A cubical block of side ‘a’ and density ‘’ slides over a fixed inclined plane with constant velocity ‘v’. There is a thin film of viscous fluid of thickness ‘t’ between the plane and the block. Then the coefficient of viscosity of the thin film will be:
A cubical block of side ‘a’ and density ‘’ slides over a fixed inclined plane with constant velocity ‘v’. There is a thin film of viscous fluid of thickness ‘t’ between the plane and the block. Then the coefficient of viscosity of the thin film will be:
physics-General
physics-
The three water filled tanks shown have the same volume and height. If small identical holes are punched near this bottom, which one will be the first to get empty
The three water filled tanks shown have the same volume and height. If small identical holes are punched near this bottom, which one will be the first to get empty
physics-General
physics-
Equal volumes of two immiscible liquids of densities r and 2r are filled in a vessel as shown in figure. Two small holes are punched at depth h/ 2 and 3h/2 from the surface of lighter liquid. If v1 and v2 are the velocities of a flux at these two holes, then v1 /v2 is
Equal volumes of two immiscible liquids of densities r and 2r are filled in a vessel as shown in figure. Two small holes are punched at depth h/ 2 and 3h/2 from the surface of lighter liquid. If v1 and v2 are the velocities of a flux at these two holes, then v1 /v2 is
physics-General
physics-
A large tank is filled with water (density = 103 kg/m3). A small hole is made at a depth 10 m below water surface. The range of water issuing out of the hole is Ron ground. What extra pressure must be applied on the water surface so that the range becomes 2R (take 1 atm = 105 Pa and g = 10 m/s2):
A large tank is filled with water (density = 103 kg/m3). A small hole is made at a depth 10 m below water surface. The range of water issuing out of the hole is Ron ground. What extra pressure must be applied on the water surface so that the range becomes 2R (take 1 atm = 105 Pa and g = 10 m/s2):
physics-General
physics-
In a cylindrical vessel containing liquid of density r, there are two holes in the side walls at heights of h1 and h2 respectively such that the range of efflux at the bottom of the vessel is same. The height of a hole, for which the range of efflux would be maximum, will be
In a cylindrical vessel containing liquid of density r, there are two holes in the side walls at heights of h1 and h2 respectively such that the range of efflux at the bottom of the vessel is same. The height of a hole, for which the range of efflux would be maximum, will be
physics-General
physics-
A fire hydrant delivers water of density at a volume rate L. The water travels vertically upward through the hydrant and then does 90° turn to emerge horizontally at speed V. The pipe and nozzle have uniform crosssection throughout. The force exerted by the water on the corner of the hydrant is
A fire hydrant delivers water of density at a volume rate L. The water travels vertically upward through the hydrant and then does 90° turn to emerge horizontally at speed V. The pipe and nozzle have uniform crosssection throughout. The force exerted by the water on the corner of the hydrant is
physics-General
physics-
A cylindrical vessel open at the top is 20cm high and 10cm in diameter. A circular hole whose cross-sectional area 1 cm2 is cut at the centre of the bottom of the vessel. Water flows from a tube above it into the vessel at the rate 100 
. The height of water in the vessel under steady state is (Take g=1000 
)
A cylindrical vessel open at the top is 20cm high and 10cm in diameter. A circular hole whose cross-sectional area 1 cm2 is cut at the centre of the bottom of the vessel. Water flows from a tube above it into the vessel at the rate 100 . The height of water in the vessel under steady state is (Take g=1000 )
physics-General
physics-
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
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
physics-General
physics-
A tube is attached as shown in closed vessel containing water. The velocity of water coming out from a small hole is :
A tube is attached as shown in closed vessel containing water. The velocity of water coming out from a small hole is :
physics-General
physics-
A vertical cylindrical container of base area A and upper cross-section area A1 making an angle 30° with the horizontal is placed in an open rainy field as shown near another cylindrical container having same base area A. The ratio of rates of collection of water in the two containers will be
A vertical cylindrical container of base area A and upper cross-section area A1 making an angle 30° with the horizontal is placed in an open rainy field as shown near another cylindrical container having same base area A. The ratio of rates of collection of water in the two containers will be
physics-General
