Physics question and answers for March 30, 2024
- Q ution Ans stration 15 Which of the following conditions should be more favourable for increasing the rate of forwm reaction in the equilibrium H H H AH ve 1 2000...
- Q 1 Fluid is flowing in a straight sanitary pipe of diameter 40 mm The liquid has a density of 1030 kg m and viscosity of 0 05 Pa s If...
- Q A tube of length L is filled completely with an incompressible liquid of mass M and closed at both ends The tube is then rotates in a horizontal plane about...
- Q A jet of water with cross section of 6 cm strikes a wall at ar angle of 60 to the normal and rebounds elastically from the wall without losing energy...
- Q In the figure shown a cone of density p and total height floats in a liquid of density p The height of the cone above the liquid is h If...
- Q and pour A hollow spherical ball is half submerged in water Through one tap water is taken out and through another tap a liquid of density double the density of...
- Q Consider the following statements and identify the correct answer 1 Surface tension of liquids generally decreases with rise in temperature II Viscosity of gases generally decreases with rise in temperature...
- Q A thin uniform cylindrical shell closed at both ends is partially filled with water It is floating vertically in water in half submerged state If pc is the relative density...
- Q In a U tube as shown in figure water and oil a in the left side and right side of the tube respectivel The heights from the bottom for water...
- Q 3 20 min 4 15 min Two small spherical metal balls having equal masses are made from materials of densities p and P1 P2 P1 8p2 and have radii of...
- Q 1 In a two litre metallic bottle air is pumped to a pressure of 2 0 atm A thin plastic bag of large capacity greater than 10 L with no...
- Q A long capillary tube of radius 0 2 mm is placed vertically inside a beaker of water Water rises to a hight of 7 05 cm in the tube making...
- Q The velocity of efflux from a small hole made at bottom of a container as a function of height y of water in tank is Straight line Parabola Ellipse
- Q Consider fully developed laminar flow in a circular pipe shown below Use a cylindrical control volume CV as shown Indicate the forces acting on the control volume Using the momentum...
- Q a 3 12 27 A plank of area of cross section A is half immersed in liquid 1 of density p and half in liquid 2 of density 2p What...
- Q depth 10th below water surface The range of water issuing o of the hole is R on ground What extra pressure must be applied on the water surface so that...
- Q A cylindrical container of the shape shown in the figure has a diameter of 0 9 m at the top and 0 3 m at the bottom A horizontal capillary...
- Q uniform 156 A wooden water cross section is hinged at one end to the bottom of height of 0 5 m The specific gravity of the planki 0 5 The...
- Q A symmetrical right circular cone of wood floats in fresh water with axis vertical and the apex down The axial height of the cone is 1 unit The submerged portion...
- Q A spherical ball of radius R is made by joining two hemispherical parts The two parts have density p and 2p When placed in a water tank the ball floats...
- Q In a streamline flow The speed of a particle always remains same The velocity of a particle always remains same The kinetic energies of all the particles arriving at a...
- Q 11 On increasing temperature of a liquid its surface tension generally 1 Increases 2 Decreases 3 Remains constant 4 First increases and then decreases
- Q A 90 N rectangular solid block slides down a 30 inclined plane The plane is lubricated by a 3 mm thick film of oil of relative density 0 90 and...
- Q As the drawing illustrates a pond full of water has the shape of an inverted cone with the tip sliced off and has a depth of 30m The atmospheric pressure...
- Q A large cylindrical tank of cross sectional area 1m is filled with water It has a small hole at a height of I m from the bottom A movable piston...
- Q Two arms of a U tube have unequal diameters d 1 0 mm and d 1 0 cm If water surface tension 7x 10 N m is poured into the...
- Q 3 A long capillary tube of radius r is put in contact with surface of a perfectly wetting liquid of density p and very low viscosity What maximum height h...
- Q 34 View In English A vertical glass capillary tube open at both ends contains some water which of the following shape may be taken by water in the tube 1...
- Q 0 5m The volume of an air bubble is doubled as it rises from the bottom of a lake to its surface If the atmospheric pressure is H m of...
- Q A drop of water of radius 0 0015 mm is falling in air If the coefficient of viscosity of air is 2 0 x 10 5 kg m s the...
- Q For the system shown in the figure the cylinder on the left at L has a mass of 600 kg and a cross sectional area of 800 cm The piston...
- Q A wooden cube density of wood of side l floats in a liquid of density p with its upper and lower surfaces horizontal If the cube is pushed slightly down...
- Q The pressure of water in a water pipe when tap is opened and closed is respectively 3 105 N m and 3 5 x 105 N m With open tap...
- Q Two soap bubbles of different radii are connected by a tube then Air flows from bigger bubble to smaller bubble till their size becomes equal Air flows from smaller to...
- Q 9 Two vessels A and B have the same base area ar contain water to the same height but the mass water in A is four times that in B...
- Q Two co axial glass tubes forming an annulus with small gap are immersed in clean water The inner and outer radii of the annulus are r and ro respectively What...
- Q A capillary tube is dipped in a liquid such that the height to which liquid is raised is 40 cm The capillary tube is inclined at an angle 37 with...
- Q The area of the inner cross section of a horizontal tube fixed is A while the area of cross section of its part on the right hand side is KA...
- Q The surface tension of water at 20 C is 75 x 10 3 N m The difference in the water surfaces within and outside an open ended capillary tube of...
- Q given below the lists List l A Newtonian fluid B Ideal fluid C Thixotropic fluid D Rheological fluid List II 1 Frictionless and incompressible 2 Viscosity is invariant with shear...
- Q The velocity distribution for flow over a plate is given by u 0 5y y2 where u is the velocity in m s at a distance y meter above the...
- Q The density of of aluminum is 2700 kg m The density of gold is 1 93 x 104 kg m of gold What volume of aluminum will have the same...
- Q The velocity of a small ball of mass M and density d when dropped in a container filled with glycerine becomes constant after some time If the density of glycerine...
- Q A liquid is under streamline flow through a horizontal pipe of non uniform cross sectional area If the volume rat of flow at a cross section of area a is...
- Q V0 3R 43 A cylindrical drum open at the top contains 15 litres of water It drains out through a small opening at the bottom 5 litres of water comes...
- Q is flowing out from the full tank with a hole near bottom If area of container is 10 times the area of hole then time level to get lowered from...
- Q A large tank of area A contains liquid of density A cylinder of density 4 and length and area a a A is kept in equilibrium by applying an external...
- Q Water is flowing out from the full tank with a hole near bottom If area of container is 10 times the area of hole then time taken by water level...
- Q Consider a triangular plate as shown in Fig Air flows over on its both sides with an approach velocity of 2 m s Take air p 1 205kg m v...
- Q A Prandtl tube Pitot static tube with C 1 is used to measure the velocity of water The differential manometer reading is 10 mm of liquid column with a relative...
- Q A jet of water issues from a Nozzle with a velocity 20 m s and it impinges normally on a flat plate moving away from it at 10 m s...
- Q PASSAGE 1 A cylinder of radius R and length L is kept embedded along the wall of a dam such that a flexible to rotate about the hinge as shown...
- Q 163 From the given diagram the speed with which water leaves the tube B of small diameter is 1 2gh 2 2h 2 3 2g h h 4 2g h...
- Q Three liquids of densities d 2d and 3d are mixed in equal 151 proportions of weights The relative density of the mixture is 1 2 3 11d T 18d 11...
- Q An aeroplane of mass 3 x 104 kg and total wing area of 120 m is in a evel flight at some height The difference in pressure between the upper...
- Q LA spherical soap bubble of radius 1 cm is formed inside another soap bubble of radius 3 cm The radius of a single soap bubble which maintains the same pressure...
- Q 376 22 A block of wood weighs 12 kg and has a relative density 0 6 It is to be in water with 0 9 of its volume immersed What...
- Q The radius of a soap bubble is increased from cm to NLE 15 cm If the surface tension of water is 30 dynes per cm then the work done will...
- Q what force must a prey whithstand In example 11 1 we calculated the mass of water in a large tank Now we will consider the pressure and force acting on...
- Q vii A horizontal oriented tube AB of length rotates with a constant angular velocity about a stationary vertical axis 00 passing though the end A figure 7 63 The tube...
- Q ix The fresh water behind a reservoir dam is 15 m deep A horizontal pipe 4 0 cm in diameter passes through the dam 6 0 m below the water...
- Q tube in which a liquid of acceleration the tube is liquid will fall out of the v A rough surfaced metal cube of size 4 cm and mass 100 gm...
- Q In a horizontal pipe line the pressure falls by 16 Nm between two points separated by a distance of 2 km Density of oil is 800 kg m 3 Change...
- Q r ii A siphon has a uniform circular base of diameter with its crest A 1 8 m above water level as in figure 7 61 Find a velocity of...
- Q i A rubber ball of mass 10 gm and volume 15 cm is dipped in water to a depth of 10m Assuming density of water uniform throughout the depth if...
- Q The velocity of flow of a liquid through an orifice at the bottom of a tank depends on the A Density of the liquid B Area of the cross section...
- Q 2 Two vessels A and B of different shapes have the same base area and are filled with water up to the height h see figure The force exerted by...
- Q 14 Water filled into a container with hexagonal cross section of side 3 tension of water is 0 02 N m then the surface energy of water will be xx...
- Q depth and of coefficient of viscosity n The density of the solid is greater than of t liquid The time taken by the body to attain the 90 of the...
- Q MULTIPLE CORRECT ANSWER TYPE This section contains 6 multiple choice questions Each question has 4 options A B C and D for its answer out of which ONE OR MORE...
- Q A cylindrical vessel of area of cross section A and filled with liquid to a height hi has a capillary tube of length 1 and radius r protruding horizontally at...
- Q 7 4 A tube in vertical plane is shown in figure 7 73 It is filled with a liquid of density p and its end B is closed Then the...
- Q 23 An engine pumps water continuously through a hose Water leaves the hose with a velocity u and m is the mass per unit length of the water jet What...
- Q D the strains produced in the rods are in the ratio 1 2 3 4 SECTIO N II NUMERICAL VALUE TYPE section contains 8 questions Each question is numerical value...
- Q 27 equal small water drops combine to form a big drop if surface tension of water is T and radius of small drop is r then A excess pressure inside...
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