Physics question and answers for April 08, 2024
- Q A blacksmith fixes iron ring on rim of woods wheel of a cart The diameter of rim and iron ring are 3 243 m and 3 231 m respectively at...
- Q ber 10 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 surfaces are 80...
- Q 13 The edge of an aluminum cube is 10 cm One face of the cube is firmly fixed to a vertical wall A mass of 100 kg is attached to...
- Q 4 1 x 10 6 m 14 A rigid bar of mass 15 kg is supported symmetrically by three wires each 2 0 m long Those at each end are...
- Q A triangular lamina of area A and height h is immersed in a liquid of density in a vertical plane with its base on the surface of the liquid The...
- Q 3 A hollow sphere of radius R with a small hole at the bottom is completely filled with a liquid of uniform density see figure The liquid drains out of...
- Q 5 Two soap bubbles of equal radii 4cm are touching each other with an intermediate film separating them Surface tension of solution forming bubbles is 7 10 N m The...
- Q height They are connected by a tube see figure alf the liquid in container A is heated in which direction will the liquid flow through the tube b If the...
- Q A uniform rod of length cross sectional area A and Young s modulus Y is subjected cross sect onal area A and Young s modulus Y is subjected to to...
- Q P A point source of power P is placed on the axis of a thin hemispherical shell as shown The shell has a radius of 3m and behaves like a...
- Q 17 A particle of mass 1 96 10 15 kg is kept is equilibrium between two horizontal metal plates having potential difference of 400 V separated apart by 0 02...
- Q A dip circle shows an apparent dip of 45 at a place where the true dip is 30 If the dip circle is rotated through 90 what apparent dip will...
- Q A wire extends by l mm when a weight W is hanged from it If the wire passes through the pulley and a weight W is attached at one end...
- Q When two soap bubbles of different radii coalesce some portions of their surface make a common surface At any point on the circumference of the common surface the three surface...
- Q 3 3 m 4 1 89 m While visiting the orthopedics department AIIMS Delhi Ram notices a datasheet whic mentions that the human femoral cortical bor has an average Young...
- Q 3 4 23 The bulk modulus of water is 3 x 10 N m The extra pressure required to increase the density of water by 0 2 is 1 1...
- Q A solid sphere of radius 3cm made of material of bulk modulus 2x10 N m is surrounded by a liquid in a cylindrical container A massless piston of area 8x10...
- Q Online Mock Test Series for NEET 2020 43 The Young s modulus of the material of the wire length L and radius r is Y N m If the length...
- Q Two identical ropes A and B of uniform mass per unit length arc suspended from the ceiling and are made to pass through an almost inertia less metallic tubular structure...
- Q Test 3 Code A 43 Two wires w and w are made of the same material and have the same volume However wire w has cross sectional area A and...
- Q 92 A uniform steel rope 400 meters long is hang vertically The weight of the steel is 7 8 gm cm and D 21000 kg mm2 The ratio of elongation...
- Q 12 A wire is suspended by one end At the othe a weight of 20N is hung If the increase in leng wire is 1mm the increase in the elastic...
- Q To what depth below the surface of sea should a rubber ball be taken so as to decreases its volume by 0 1 Average density of sea water 1000kg m...
- Q Rod of constant cross section moves towards right with constant acceleration Graph of stress and distance from left end is given as in figure If density of material of rod...
- Q Water density p is flowing through the uniform tube of cross sectional area A with a constant speed as shown The magnitude of force exerted by the water on the...
- Q ns 12 0 A wire of length L area of cross section A is hanging from a fixed support The length of the wire changes to L when mass M...
- Q 28 A load causes a wire to stretch by the amount s If the same load is applied to another wire of the same material but four times as long...
- Q The potential energy stored in a certain kind of an elastic rope is a function of its length L in meters and can be evaluated using the equation P 10...
- Q One end of a steel wire of area of cross section 3 mm is attached to the ceiling of an elevator moving up with acceleration of 2 2 m s...
- Q The end of a capillary tube with a radius r is immersed vertically into water an the water rises up inside the tube T is the surface tension and pis...
- Q A cylindrical tube with radius R wall thickness A is filled with and ideal gas with pressure P What is maximum pressure of gas it can with if the system...
- Q A capillary tube of radius R is immersed in water and water rises in it to a height H Mass of water in the capillary tube is M If the...
- Q A metallic rod breaks when strain produced is 0 2 The Young s modulus of material of rod is 2 x 1011 N m What should be the minimum area...
- Q A parallel beam of radiation is incident first on a highly conducting sphere and then on a highly conducting cube as shown If both sphere and cube are made from...
- Q Water ns rises in a capillary surface It will rise to a height more than h a when the lift is at rest on the surface of the cam b...
- Q A mercury drop of radius 1 cm is sprayed into 106 drops of equal size The energy expressed in joule is surface tension of Mercury is 460 10 3 N...
- Q Force acting on a uniform rod having length 3l and area of cross section A and young s modulus Y are shown in figure 2F FI Find elongation in the...
- Q Two conductors are made of the same material and have the same length Conductor A solid wire of diameter 1 mm Conductor B is a hollow tube of outer diameter...
- Q A wooden cross floats in water Each arm of the cross is coated on one side with varnish as shown in the figure Then mark the correct statement s Question...
- Q n ideal homodiatomic gas has r m s speed of molecules equal to v On oubling the temperature the gas molecules dissociate into monoactomic gas The new r m s...
- Q A wire of length L area of cross section A is hanging from a fixed support The length of the wire changes to L when mass M is suspended from...
- Q 39 A weightless rod is hanging by two wires according to figure 39 farger un tres ad IGE BAR GA If both has same longitudinal strain then distance of weights...
- Q 3 T T T 4 To T T 33 33 In determination of young modulus of elasticity of wire a force is applied and extension is recorded Initial length of...
- Q 28 A machine gun fires bullets of mass 30g with a velocity of 1500 m s The man holding the gun can exert a maximum force of 300N on it...
- Q A steel wire of length 2L and cross sectional area A is stretched within elastic limit horizontally between two supports as shown in figure When a mass m is suspended...
- Q 39 SSM www A hollow sphere of inner radius 8 0 cm and outer radius 9 0 cm floats half submerged in a liquid of density 800 kg m a...
- Q If the length of copper wire is doubled then its young s modulus of elasticity will be af and are at an uisg Options O Doubled O halved E O...
- Q Is a material which changes its shape or size upon the application of a distorting force provided it returns to its original condition upon the removal of that force this...
- Q 2 10 A metal ball immersed in water weighs w at 0 C and w at 50 C The coefficient of cubical expansion of metal is less than that of...
- Q A 30 kg male emperor penguin under a clear sky in the Antarctic winter loses very little heat to the environment by convection its feathers provide very good insulation It...
- Q A composite block is made of slabs A B C D and E of different thermal conductivities given in terms of a constant K and sizes given in terms of...
- Q A copper wire and a lead wire are joined together end to end The compound wire has an effective coefficient of linear expansion of 20 0 x 10 6 C...
- Q liter cylinder Gab wants to measure the pressure of his portable oxygen tank Originally the gas exerts a pre of 1 02 atm in an unknown volume When he increased...
- Q Two wires are made up of different materials on which same stress is being applied If the Young Moduli of the two wires are in the ratio 1 2 what...
- Q There is an infinite array of ideal springs as shown in figure whose base row is attached to a fixed support All the springs are identical and their spring constants...
- Q a sphere of influence the liquid molecule at its centre is attracted by other molecules lying outside the sphere of influence 3 repelled by other molecules lying outside the sphere...
- Q 19 If it takes 5 minutes to fill a 15 litre bucket from a water tap of diameter 2 cm then the Reynolds TU number for the flow is density...
- Q 5 Three liquids of densities P P2 and p3 with P P P3 having the same value of surface tension T rise to the same height in three identical capillaries...
- Q The equation of process of a monoatomic gas is VU 2 constant where V and U are Volume and Internal energy respectively Then coefficient of volume expansion of gas as...
- Q the surface tension of water is T and the atmosphere pressure is Po Consider a vertical section ABCD of the water column through a diameter of the beaker The force...
- Q Two wires of different materials having Young s moduli in the ratio 3 5 lengths in the ratio 2 1 and diameters in the ratio 1 2 are stretched with...
- Q A metallic wire of diameter 0 3 mm and 2 kg If the elongation produced is 2 mm A Young modulus is 4 16 x 10 1 N m C...
- Q A 0 5 dm flask contains gas A and 1 dm flask contains gas B at the same temperature If density of A 3 0 gm dm3 and that of...
- Q Newton s law of cooling states that the temperature of an object changes at a rate proportional to the difference between its temperature and that of its surroundings Suppose that...
- Q ng to you if we increase the length th e radius will increase too always Bu t i dont think that is correct Incorrect Questions 19 180 The Poisson s...
- Q 9 The maximum pressure variation that the human ear can tolerate in loud sound is about 30 N m2 The corresponding maximum displacement for a sound wave in air having...
- Q then its density at 1 13 11 g cc 3 16 11 g cc 4 26 11 g cc A metre rod of silver at 0 C is heated to...
- Q A steady stream of water falls straight down from a pipe Assume the flow is incompressible the flow is similar to figure How does the pressure in the water vary...
- Q If a rectangular rock 3m wide 6 m long and 4m high and the top of the rock experiences a force of 680 000 N which shifts the top of...
- Q A square slab of lead of side 50 cm and thickness 10 cm is subjected to a shearing force on narrow face of magnitude 9 10 N The lower edge...
- Q Why frequency remains constant A uniform heavy string of mass M hangs vertically from a rigid ceiling A transverse wave is sent from its free end towards fixed end As...
- Q A wire of resistance 0 502 m is bent into a circle of radius 1m The same wire is connected across a diameter AB as shown in figure The equivalent...
- Q 4 The resistivity of iron is 10x10 8 Qm The resistance of the given wire of a particular thickness and length is 10 If the diameter and length of the...
- Q An electric bulb rated 100 W 40 V has to be operated across 50 V 50 Hz A C supply What is the value of inductance of inductor in series...
- Q A body is floating in water at 4 C such that 0 98 of its total volume is immersed in water If the coefficient of real expansion of water is...
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