Physics question and answers for March 28, 2024
- Q When a block of iron floats in mercury at 0 C fraction k of its volume is submerged while at the temperature 60 C a fraction k is seen to...
- Q Water flows in a horizontal tube see figure The pressure of water changes by 700 Nm 2 between A and B where the area of cross section are 40 cm...
- Q rminal velocity i e it is now falling at a constant velocity Use Fd to denote e drag force due to air resistance Please use the interactive area below to...
- Q c 3 25 10 N d 4 25 10 N 7 A steam of water flowing horizontally with a speed of 25 msgushes out of a tube of cross sectional...
- Q An ice block floats in a liquid whose density is less than water A part of block is outside the liquid When whole of ice has melted the liquid level...
- Q A cylindrical block floats vertically in a liquid of density P kept in a container such that the fraction of volume of the cylinder inside the liquid is Then some...
- Q 7 77 A vertical tube has diameter 0 016 m at its bottom end from which water flows out at the rate of 1 2 kg per minute The pressure...
- Q A spherical liquid is object of mass 1 kg and radius Im is falling vertically downward inside a viscous liquid in a gravity free space At a certain instant the...
- Q 7 87 Water flows through a tube shown in figure 7 134 The areas of cross section at A and B are 1 cm and 0 5 cm respectively The...
- Q Which of the following statements about a fluid at rest in a cup is are correct 1 Pressure is same at all the points in the fluid 2 Pressure is...
- Q A viscous liquid is filled in a tank at room temperature In summer the temperature rises then what will effect on viscosity of the liquid 1 2 3 Increases Decreases...
- Q 7 58 A cube of ice of edge 4 cm is placed in an empty cylindrical glass of inner diameter 6 cm Assume that the ice melts uniformly form each...
- Q 7 67 Two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a valve which is closed Both containers...
- Q 7 70 A water pipe with internal diameter of 2 cm carries water at the floor of a house with velocity 2 m s and at pressure 2 105 N...
- Q 18 A ring is cut from a platinum tube of 8 5 cm internal and 8 7 cm external diameter Its plane is kept horizontal so that it comes in...
- Q and is 1000 kg m O 5 8x10 m 4 7 10 m 4 7 10 m 5 9x10 2 m 5 9x10 m O 4 6x10 1 m Question...
- Q 0 There is a hole of radius r at the bottom of a long cylindrical vessel of glass The depth to which the vessel can be lowered vertically in a...
- Q 34 A large tank is filled with water density 103 kg m A small hole is made at a depth 10 m below water R on ground Approximately what extra...
- Q A soap bubble of radius R starts collecting charge slowly and evenly on its surface till its radius becomes 2R If surface tension of soap water is s then the...
- Q is opened Assume isothermal conditions Atmospheric pressure is p 105 Pa Pwater 10 kg m Water of density p is filled in a hemispherical bowl of radius R to its...
- Q Two capillary of length L and 2L and of radius R and 2R are connected in series The net rate of flow of fluid through them will be given rate...
- Q A U tube of uniform cross section is partially filled with a liquid I Another liquid ll which does not mix with liquid I is poured into one side It...
- Q Please explain this question with hel p of diagram i didn t understand the concept of thickness of dam relation with increasing pressure with depth How thickness affects working of...
- Q A hypothetical planet has an ocean of water which is 50 km deep The top 5 km is frozen as ice i e 45 km is water Radius and average...
- Q A cuboidal piece of wood has dimensions a b and c Its relative density is d It is floating in a large body of water such that side a is...
- Q 34 A liquid is kept in a cylindrical vessel which is being rotated about a vertical axis through the centre of the circular base If the radius of the vessel...
- Q A student starts an experiment with a stack of three identical sheets of paper He crumples the stack against his fist as shown in the figure then separates a single...
- Q 47 A U tube of cross section A and 2A contains liquid of density p Initially the liquid in the two arms are held with a level difference h as...
- Q Figure shows a soap film formed between two square figures made of a uniform wire The bigger square is held while keeping it in a horizontal plane and the smaller...
- Q A straight glass tube is having sealed lower end and upper end is open to atmosphere The lower half of the tube is filled with n moles of a diatomic...
- Q 56 A hollow object of volume V is immersed in a tank The object is tied to the bottom of the tank by two wires which make an angle 30...
- Q Two balls of same radius and weight are suspended on threads so that their surfaces are in contact A total charge of Q 4 x 10 7C is given to...
- Q 41 A bucket contains water filled upto a height 15 cm The bucket is tied to a rope which is passed over a frictionless light pulley and the other end...
- Q 55 A tube of radius r and sufficient height is dipped in a liquid of surface tension S and density p Heat developed upto steady state will be TS os...
- Q Two cylindrical tanks of radii r and 2r with their bases at the same level contain a liquid of density p to heights H and 3H respectively as shown in...
- Q 5 A helium balloon can just lift a load of 750 N The skin of the balloon has a mass of 1 40 kg What is the volume of the...
- Q It is sufficiently long so that water rises to maximum height h in the tube The length of the portion immered in water The lower end of the tube is...
- Q 4 A lead block is suspended by means of a string from the underside of a 6 50 kg block of wood of density of 688 kg m If the...
- Q 8 A plane is in level flight and each of its wings has an area 20 m If the speed of air on upper and lower surface are 80 m...
- Q A 5 99 6 m OT4 5 67x10 8 16 108 60 An air bubble in a water tank rises from the bottom to the top Which of the following...
- Q 14 A solid cylinder of mass m length 1 and radius r is rotating about its axis in a hollow cylinder of inner radius 2r filled with a liquid of...
- Q Q 35 A brass bar having cross sectional area of 1000 mm subjected to a forces in figure below Find the stress induced in the portion BC in kN mm...
- Q AU Tube contains two liquids in static equilibrium Water In right arm and oll of unknown density In left arm Measurement given are 136 mm and d 12 mm the...
- Q A tank of area A is filled with two immiscible liquids of density 2p and p with height h and 2h respectively as shown in figure If a small orifice...
- Q 1 Oil is poured into the open side of an open tube manometer containing mercury What is the density of the oil if a column of mercury 5 00 cm...
- Q A U Tube contains two liquids in static equilibrium Water i right arm and oil of unknown density in left arm Measurement given are 136 mm and d 12 mm...
- Q Three cylinders A B and C are filled with gases at different pressures Two mercury manometers X and Y are connected to the three cylinders as shown in the figure...
- Q 1 An air bubble of small radius R is inside a liquid of surface tension T and density p If bubble is at a depth h below the free surface...
- Q A sphere of radius 10 cm and density 500 kg m is under water of density 1000 kg m The acceleration of the sphere is 9 80 m s upward...
- Q A uniform vertical cylinder density a is released from rest when its lower end just touches the liquid density p surface of a deep lake Calculate maximum displacement of cylinder...
- Q The capillary tube is dipped in water vertically It is sufficiently long so that water rises to maximum height h in the tube The length of the porti immered in...
- Q required ratio 32 A canister has a small hole at its bottom Water penetrates into the canister when its be at a depth of 40 cm from the surface of...
- Q An ideal fluid flows laminar flow through a pipe of non uniform diameter The maximum and minimum diameters of the pipes are 6 4 cm and 4 8 cm respectively...
- Q Two soap bubbles of equal radii R 8cm are stuck together with an intermediate film separating them Surface tension of solution forming bubbles is 7x10 Newton meter What will be...
- Q In a large rectangular water tank water is coming out of a small hole at the bottom of the tank It takes almost 4 min to empty half of the...
- Q 7 46 A level controller is shown in the figure 7 113 it consists of a thin circular plug of diameter 10 cm and a cylindrical plug of diameter 20...
- Q In the figure shown density of lower liquid is three times of density of upper liquid The cross sectional areas of openings shown are same The ratio of mass flow...
- Q A solid sphere of density n 1 times lighter than water is suspended in a water tank by a string tied to its base as shown in fig If the...
- Q Two glass plates of width b are kept close to each other in water at a small distance d as shown in figure Density of water is p surface tension...
- Q A solid has a volume vo when external pressure is po Bulk modulus of the material is B Now the pressure is increased to p The additional energy per unit...
- Q Passage 3 Q Nos 8 to 10 A wooden cylinder of diameter 4r height h and density p 3 is kept on a hole of diameter 2r of tank filled...
- Q Which one of the following cannot be explained on the basis of Bernoulli s theorem A Blowing off of light roofs when strong winds blow B Curved path followed by...
- Q A cylindrical buoy of mass 942 4 kg has a diameter of 1 2 m and it is floating in salt water with a density of 1030 kg m3 A...
- Q If two glass plates have water between them and are separated by very small distance see figure it is very difficult to pull them apart It is because the water...
- Q A block of wood of relative density 0 5 is placed 10 m inside a vessel containing water The vessel is accelerated upward with an acceleration of 10 m s...
- Q 14 Figure shows a vessel of depth R having a pipe of small cross sectional area considered very small as compared to area of vessel in the shape of a...
- Q of 1 3 A copper density of Cu P ball of diameter d is immersed e in oil of density p What is the charge on the ball if in...
- Q Two drops of same radius are falling through air with steady speed v If the two drops coalesce what would be the terminal speed A v B 2v C 3v...
- Q A conical flask of mass 10 kg and base area as 10 cm is floating in liquid of relative density 1 2 as shown in the figure The force that...
- Q One end of a glass capillary tube with a radius r 0 005 cm is immersed into water to a depth of h 2 cm What pressure is required to...
- Q The following data represents the relation between the dynamic viscosity of water and the temperature Temperature C 3 8 13 18 23 28 Dynamic viscosity of water u x 10...
- Q 7 35 In a given U tube open at one end and closed at other end as shown find out the correct relation between p and patm Given d 2...
- Q 7 23 A block is partially immersed in a liquid and the vessel is accelerating upwards with an acceleration a The block is observed by two observers O and O...
- Q ROTATRA Between two parallel long wires AB and CD is a wires PQ EF The separation between PQ EF is x which can be statement s is are 08 C...
- Q 7 19 The manometer shown below is used to measure the difference in water level between the two tanks Calculate this difference for the conditions indicated Water A 2 cm...
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