Physics question and answers for April 06, 2024
- Q us Pre Medical Physics 9 A glass vessel of volume 100 cm is filled with mercury and is heated from 25 C to 75 C What volur of mercury will...
- Q The coefficient of volume expansion for benzene is 2 x 10 K and its bulk modulus of elasticity is 104 Pa What pressure in Pa must be applied to it...
- Q A uniform steel bar Young s modulus 200 GPa density 7 8 gm cc of total length 40 m hangs vertically The ratio of elongation of top 10 m to...
- Q 1 Consider a head on collision between two cars One is initially at rest and the other moves toward it After the collision they stick together Sketch a position vs...
- Q 100 Two circular shafts of same material same length L and same outside diameter D are subjected to torques so that they develop same maximum shear stress The first shaft...
- Q A cube of side 40 cm has its upper face displaced by 0 1 mm by a tangential force of 8 kN The shearing modulus of cube is 1 2...
- Q A container has two immiscible liquids of densities p and p2 P1 A capillary tube of radius ris inserted in the liquid so that its bottom reaches upto the denser...
- Q Fir 1 8 x 10 5 N s m and its density is 1 2 kg m Force of buoyancy due to air is neglected An air bubble of radius...
- Q A rubber cord catapult has cross sectional area 25 mm and initial length of rubber cord is 10 cm It is stretched to 5 cm and then released to project...
- Q Bone has a Young s modulus of about 18 x 10 Pa and can withstand compression stresses up to 160 x 106 Pa before breaking If your forearm is 0...
- Q A wire of length L and cross section area A suspended at one of its end from a ceiling density and Young s modulus of material are d ar Y...
- Q When a large bubble rises from the bottom of a lake to the surface its radius is doubled The atmospheric pressure is column of water of heigh he depth of...
- Q The rubber cord of a catapult has cross section area 1 mm and a total unstretched length 10 cm It is stretched to 12 cm and then released to project...
- Q Addition of Water to a Salt Solution Pure water is added drop by drop to a vessel of volume V filled with a salt solution of specific gravity po which...
- Q Water is filled up to a height h in a beaker of radius R as shown in the figure The density of water is p the surface tension of water...
- Q A rigid rod AB of mass M and length is suspended horizontally from two vertical wires having same length and same area of cross section When a mass m is...
- Q The presence of flaws such as microscopic cracks and cavities will result in O lower compressive strength of ductile materials compared to their tensile strength O lower compressive strength of...
- Q Two conductors a are made of the same material and have the same length Conductor A is a solid wire of diameter 1 1 mm Conductor B is a hollow...
- Q hen a concentrated load is applied directly on a body it creates stress whose distribution is uniform except in the immediate vicinity of the point of application of the load...
- Q 48 A stream of liquid set at an angle 0 is directed against a plane surface figure The liquid after hitting the surface spreads over it Find the pressure on...
- Q 17 When at rest a liquid stands at the same level in the tubes shown in figure But as indicated a height difference h occurs when the system is given...
- Q 13 When a weight of 10 kg is suspended from a copper wire of length 3 m and diameter 0 4 mm its length increases by 2 4 cm If...
- Q 10 There is a horizontal film of soap solution On it a thread is placed in the form of a loop The film is pierced inside the loop and the...
- Q 1 A target element A is bombarded with electrons and the wavelengths of the characterstic spectrum are measured A second characteristic spectrum is also obtained because of an impurity in...
- Q Two capillaries of same material but of different radii are dipped in a liquid In one of the capillary the liquid rises to a height of 22 cm and in...
- Q Q18 A square prism of wood 50mm x 50mm in cross section and 300 mm long is subjected to a tensile stress of 40 N mm along its longitudinal axis...
- Q A capillary tube is attached horizontally to a constant head arrangement If the radius of the capillary tube is increased by 10 then the rate of flow of liquid will...
- Q ap film is formed on a vertical equilateral triangular frame ABC Side BC can move vertical ining horizontal If m is the mass of rod BC and T is surface...
- Q Q12 Determine the total compression of a bar made up of three circular cross sections as shown in figure The diameter being 10mm 20mm and 30mm of the top middle...
- Q A particle of mass m is moving in y z plane with a uniform velocity v with its trajectory running parallel to ve y axis and intersecting z axis at...
- Q 86 A uniform rectangular bar of length 7 width b and thickness t is subjected to a tensile stress in longitudinal direction If e be the longitudinal strain developed and...
- Q Twenty seven droplets of water each of radius 0 1 mm coalesce into a single dro Find the change in surface energy Surface tension of water is 0 072 N...
- Q A uniform rod of mass M and length L area of cross section A is placed on a smooth horizontal surface Forces acting on the rod are shown in the...
- Q A steel wire is stretched with a definite load If the Young s modulus of the wire is Y For decreasing the value of y O O Radius is to...
- Q 1 Calculate the density specific weight and specific volume of chlorine gas at 25 C and under a pressure of 600 kPa absolute The gas constant R for chlorine is...
- Q A steel cable hanging vertically can support a maximum load W If the cable is cut to exactly half of its original length then the maximum load that it can...
- Q Two opposite forces F 120N and F 80N act on an heavy elastic plank of modulus of elasticity y 2x10 1 N m2 and length L 1m placed over a...
- Q A cantilever beam AB of length L and uniform flexural rigidity El has a rigid bracket BC attached to its free end as shown in the figure End C is...
- Q 15 A rod of length 1 05m having negligible mass is supported at its ends by two wires of steel wire A and aluminium wire B of equal lengths as...
- Q A uniform ring having mass m radius R cross section area of the wire A and young s modulus Y is rotating with an angular speed w is small on...
- Q A composite rod made of thre and cross section as shown in the fig The thermal conductivities of the materials of the rods are K 2 5K and K respectively...
- Q Figure shows a large closed cylindrical tank containing water Initially the air trapped above the water surface has a height ho and pressure 2Po where Po is the atmospheric pressure...
- Q 1 4 A steel wire of diameter 2 mm has a breaking strength of 4 x 105 N What is the breaking force of similar steel wire of diameter 1...
- Q A load of 5 kg hangs from one end of a vertical wire of length 1 m and of radius 1 mm If Young s modulus of the material of...
- Q ind the minimum diameter of an 1 18 6 m long copper wire that will stretch no more than 9 97 mm when a mass of 371 kg is hung...
- Q A block of mass M is suspended by a rod of mass M length L area of cross section A and Young s modulus Y Find increment in length of...
- Q A vessel contains 10 kg of ice at 0 C Now steam is passed into the vessel to melt ice Neglecting the thermal capacity of the vessel find the mass...
- Q 16 3 K 4 3K The spring constant of a spring is K When it is divided into n equal parts then what is the spring constant of one part...
- Q The Young s modulus of brass and steel are 1 x 10 1 N m and 2 x 10 1 N m respectively If wires of both materials having same...
- Q 6 A uniform rope of length 1 is held motionless on a friction hemisphere of radius r with one end of the rope at the top of hemisphere The hemisphere...
- Q A copper wire of diameter 1mm and length 3meters has Young s modulus 12 5 1011 dynes per sq cm If a weight of 10kg is attached to one end...
- Q 1 A steel rope of length L area of cross section A Young s modulus Y is hanging from a celling in equilibrium The elastic potential energy per unit volume...
- Q 7 Explain origin of friction 8 Derive a relation between Young s modulus coefficient of linear expansion and thermal stres
- Q ration 5 3 A bar of cross section A is subjected to equal and opposite tensile forces at its ends Consider a plane section of the bar whose normal makes...
- Q a what is the volume of one molecule of wa ter density 1 g cm b what is the radius of water molecule ass uming it to be spherical c...
- Q Two light wires negligible mass of same dimensions but made of different materials A and B are suspended vertically from one end If the Young s modulus of material A...
- Q liquid of density higher than water is filled in phase of water in a resonance tube to the same level then the frequency of resonance tube will 1 Increase Decrease...
- Q An ideal gas is enclosed in a container of volume V at a pressure P It is being pumped out of the container by using a pump with stroke volume...
- Q 13 The elevator shown in figure 5 E5 is descending with an acceleration of 2 m s The mass of the block A is 0 5 kg What force is...
- Q 45 B 2 A long elastic cord obeying Hooke s law is stretched considerably due to its own weight In one such case a cord is held from one of...
- Q If you hang vertically some length of a long uniform inextensible rope the longest hanging length is lo 2 m that does not break due to its own weight Now...
- Q Lower end of a capillary tube of radius 10 m is dipped vertically into a liquid Surface tension of liquid is 0 5 N m and specific gravity of liquid...
- Q For a certain gas the ratio of specific heats is given to be y 1 5 For this gas 1 C 3 G 3R J 5R 2 Cp 4 C...
- Q A bar of cross section A is subjected to equal and opposite tensile forces F at its ends Consider a through the bar making an angle 0 with a plane...
- Q 25 Shown below is a composite rod of metal A and B Their thermal coefficients of linear expansion are a and a2 Their lengths are L and L2 respectively If...
- Q 20 A shell is fired vertically upwards with a velocity from a trolley moving horizontally with velocity V A person on the ground observes the motion of the shell as...
- Q Select the correct statement on the basis of the given graph A Young s modulus of A is greater but it is less ductile B Young s modulus of Ais...
- Q The volume of an ideal gas at temperature 27 C is changed to 1 th of its initial value adiabatically 4 The new temperature of the gas is y 1...
- Q 10 A uniform slender rod of length L cross sectional area A and Young s modulus Y is acted upon by the forces shown in the figure The elongation of...
- Q 12 If Young modulus is three times of modulus of rigidity then Poisson ratio is equal to 4 Can t predict 1 0 2 2 0 3 3 0 4...
- Q 5 If water be used to construct a barometer what would be the height of water column at standard atmospheric pressure 76 cm of mercury Ja ne
- Q Water flows through the tube shown in figure 13 10 The areas of cross section of the wide and the narrow portions of the tube are 5 cm and 2...
- Q of area 20 cm height 20 cm and volume half a litre va Find the force exerted by the water on the bottom b Considering the equilibrium of the water...
- Q A copper rod of 88 cm and an aluminium rod of unknown length have their increase in length independent of increase in temperature The length of aluminium rod is acu...
- Q 47 The strain in the upper wire when the whole system moves upwards with an acceleration of 2ms 2 will be Given area of cross section of each string 0...
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