Cengage JEE Mains Physics by B.M Sharma
The opening near the bottom of the vessel shown in the figure has an area A. A disc is held against the opening keep the liquid from running out. Let F1 be the net forces on the disc applied by liquid and air in this case. Now the disc is moved away from the opening a short distance. The liquid comes out and strikes the disc in elastically. Let F2 be the force exerted by the liquid in this condition. The F1/F2 is
12
Sep
The opening near the bottom of the vessel shown in the figure has an area A. A disc is held against the opening keep the liquid from running out. Let F1 be the net forces on the disc applied by liquid and air in this case. Now the disc is moved away from the opening [...]
A cylindrical vessel contains a liquid of density ρ up to height h. The liquid is closed by a piston of mass m 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 is
12
Sep
A cylindrical vessel contains a liquid of density ρ up to height h. The liquid is closed by a piston of mass m 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 is Figure shows [...]
A hole is made at the bottom of the tank filled with water (density 1000kg/m^3), If the total pressure at the bottom ofthe tank is 3 atmosphere ( 1 atmosphere = 10^5N/m^2 ), then the velocity of efflux is :
12
Sep
A hole is made at the bottom of the tank filled with water (density 1000kg/m^3), If the total pressure at the bottom ofthe tank is 3 atmosphere ( 1 atmosphere = 10^5N/m^2 ), then the velocity of efflux is : A hole is made at the bottom of the tank filled with water (density 1000kg/m^3) [...]
A tank is filled with water of density 10^3 kg/m^3 and oil of density 9×10^3kg/m^3. The height of water layer is 1m and that of the oil layer is 4 M. The velocity of efflux front an opening in the bottom of the tank is
12
Sep
A tank is filled with water of density 10^3 kg/m^3 and oil of density 9×10^3kg/m^3. The height of water layer is 1m and that of the oil layer is 4 M. The velocity of efflux front an opening in the bottom of the tank is Figure shows a capillary tube C dipped in a liquid [...]
Figure shows a capillary tube C dipped in a liquid that wets it. The liquid rises to a point A. If we blow air through the horizontal tube H, what will happen to the liquid column in the capillary tube?
12
Sep
Figure shows a capillary tube C dipped in a liquid that wets it. The liquid rises to a point A. If we blow air through the horizontal tube H, what will happen to the liquid column in the capillary tube? Figure shows a capillary tube C dipped in a liquid that wets it. The liquid [...]
A beaker containing water is placed on the platform of a spring balance. The balance reads 1.5 kg. A stone of mass 0.5 kg and density 10^4 kg/m3 is immersed in water without touching the walls of the beaker. What will be the balance reading now?
12
Sep
A beaker containing water is placed on the platform of a spring balance. The balance reads 1.5 kg. A stone of mass 0.5 kg and density 10^4 kg/m3 is immersed in water without touching the walls of the beaker. What will be the balance reading now? so that the pressure at point A of the [...]
When at rest, a liquid stands at the same level in the tubes as shown in the figure. But as indicated, a height difference h occurs when the system is given an acceleration a towards the right. Then h is equal to:
12
Sep
When at rest, a liquid stands at the same level in the tubes as shown in the figure. But as indicated, a height difference h occurs when the system is given an acceleration a towards the right. Then h is equal to: a height difference h occurs when the system is given an acceleration a [...]
A cubical block of wood of side a and density ρ floats in water of density 2ρ. The lower surface of the cube just touches the free end of a massless spring of force constant K fixed at the bottom of the vessel. The weight W put over the block so that it is completely immersed in water without wetting the weight is:
12
Sep
A cubical block of wood of side a and density ρ floats in water of density 2ρ. The lower surface of the cube just touches the free end of a massless spring of force constant K fixed at the bottom of the vessel. The weight W put over the block so that it is completely [...]
We have two different liquids A and B whose relative densities are 0.75 and 1.0, respectively. If we dip solid objects P and Q having relative densities 0.6 and 0.9 in these liquids, then:
12
Sep
We have two different liquids A and B whose relative densities are 0.75 and 1.0, respectively. If we dip solid objects P and Q having relative densities 0.6 and 0.9 in these liquids, then: respectively. If we dip solid objects P and Q having relative densities 0.6 and 0.9 in these liquids then We have [...]
A U -tube in which the cross – sectional area of the limb on the left is one quarter, the limb on the right contains mercury (density13.6 g/cm^3).The level of mercury in the narrow limb is at a distance of 36 cm from the upper end of the tube. What will be the rise in the level of mercury in the right limb if the left limb is filled to the top with water ?
12
Sep
A U -tube in which the cross – sectional area of the limb on the left is one quarter, the limb on the right contains mercury (density13.6 g/cm^3).The level of mercury in the narrow limb is at a distance of 36 cm from the upper end of the tube. What will be the rise in [...]