SureDen
In a fluid, at a point, density P is defined as: ρ=lim
Pressure
Pressure is the force acting on a surface per u
Pressure
Pressure is the force acting on a surface per u
Pressure
Pressure is the force acting on a surface per u
Pressure
Pressure is the force acting on a surface per u
It states that if gravity effect is neglected, the pressure at every point of liquid in equilibrium of rest is same.
(1) Translatory equilibrium : When a body of density P and volume V is immersed in a liquid of density O, the forces acting on the body are
Different types of Continuous Charge Distribution :
Volume Charge Distribution : it is charge distribution spread over a three dimensional volume or region V of space. Volume charge density at any point in this volume as the charge con
Imperfections in Solids or Crystal defects
Irregularity in the arrangement of constituent particles in solids is called crystal defect or imperfect
Density of Lattice Matter:-
It is defined as the ratio of mass per unit cell to the total volume of unit cell.
Density of latti
If a liquid of density , volume V and bulk modulus K is compressed, then its density increases.
As density &nb
Dielectric:
A dielectric is a substance which does not allow the flow of charges though it but permits them to exert electrostatics forces on one
Ideal gas Equation:-
Any Gas which follows all the gas laws is known as Ideal Gas.
PV = nRT
Ideal gas
Composition of Nucleus:
An atom has a positively charged nucleus. The radius of the nucleus is smaller than the radius of an atom by a factor of 10
When a body moves through a fluid, the fluid in contact with the body is dragged with it. This establishes relative motion in fluid layers near the body, due to which viscous
Applications of Gauss Law
Electric field due to an infinitely long straight charged wire:
Consider a thin infinitely
Dimensions of a Physical Quantity.
The powers to which fundamental quantities must be raised in order to express the given physical quantity are called its dimensions.
To make it more clear, consider the physical quantity force
When a sound wave travels through a medium such as air, water or steel, it will set particles of medium into vibration as it passes through it. For this to happen the medium m
Pascal’s Law
(1) Speed of transverse wave motion :
(i) On a stretched string : v=&thin
Secondary cells: - Those which can be recharged e.g. - Lead strong battery, NiCad cell
(1)
Addition reactions of benzene
Benzene gives some addition reactions. Some typical reactions are:
Addition of hydrogen
An ideal simple pendulum consists of a heavy point mass body suspended by a weightless, inextensible and perfectly flexible string from a rigid support about which it is free
Means of Transport:-
1. Diffusion: It is movement of particles of a matter due to their kinetic energy.
- It tak
Physical properties of alkanes
(a) State:
(i) All are colourless & possess no characteristic odour.
(ii)
it is the property by virtue of which a conductor oppose the low of charges through it.
SI unit of resistance is Ohm. 1 ohm is the resistance offered by a conductor if
Relation between Current and Drift velocity :-
Suppose a potential d
(i) Boyle’s Law → “The volume of given mass of a gas is inversely proportional to its presence at constant temperature.&rdqu
DNA replication:
Duplication of one parental strand of DNA to form new daughter strand by following the law of semiconservativeness. And the newly
# Total Internal Reflection (T.I.R)
# Total Internal Reflection (T.I.R)
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The electric field due to cylindrical charge distribution of infinite length at a distance equal to its radius from its surface will be – ( λ =linear charge density, R = radius of the cylinder)
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If area (A) velocity (v) and density (r) are base units, then the dimensional formula of force can be represented as
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If the buoyant force F acting om an object depends on its volume V immersed in a liquid , the density ρ of the liquid and the acceleration due to gravity g. The correct expression for F can be
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Terminal velocity acquired by a spherical stone in a liquid depends on cofficient of viscocity ,density of liquid , radius of stone and acceleration due to gravity.They are related as
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The nearest neighbour silver atoms in silver crystal are 2.87 x 10-10 m apart. Silver crystallizes in fcc form. (Atomic mass of Ag = 108). Density of the silver metal is:
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At STP, the density of CCl4 vapour in g/L will be nearest to [1988]
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At STP, the density of CCl4 vapour in g/L will be nearest to (1998)
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O.24 g of a volatile gas, upon vaporization, gives 45 ML vapour at NTP. What will be the vapour density of the substance? (Density of H2 = 0.089)
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At STP, the density of CCl4 vapour in g/L will be nearest to [1988]
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The vapour density of a gas is 11.2. The volume occupied by 11.2 g of the gas at NTP will be
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The number of water molecules present in a drop of water (volume 0.0018 ml) density = 1 g ml-1 at room temperature is
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The density of a mixture of O2 and N2 at STP is 1.3 g/L. Calculate partial pressure of O2?
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A mixture of CO and CO2 is found to have a density of 1.5 g/L at 30°C and 740 torr. What is the composition of the mixture.
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The compound CuCl has ZnS structure and the edge length of the unit cell is 500 pm. Density of compound is:
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The atomic mass of an element is 60.2 amu and its density is 6.25 gm cm-3. The edge length of unit cell with be:
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The edge length of the unit cell is 290 pm and the density of the crystal is 7.8 g cm-3. If the molar mass is 56 amu, then the type of crystal lattice is:
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Gold has cubic crystals with unit cell edge length equal to 407.9 pm. Density of gold is 19.3 g cm-3. The number of atoms per unit cell is:
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An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then, density of the element is
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A face centred cubic element (atomic mass 60) has cell edge of 400 pm. The density of unit cell is:
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NaCl with density of 2.165 g cm-3 crystallises in fcc lattice. Its edge length (a) is:
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The vapour density of a mixture containing NO2 and N2O4 is 27.6. Mole fraction of NO2 in the mixture is
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N2O4 is 20% dissociated at 27° C and 760 torr. The density of the equilibrium mixture is
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A metallic element exists as cubic lattice. Each edge of the unit cell is 2.88 Å. The density of the metal is 7.20 g cm-3 How many unit cell will be present in 100 g of the metal-
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Iron crystallizes in a b.c.c. system with a lattice parameter of 2.861 Å. Calculate the density of iron in the b.c.c. system (Atomic weight of Fe = 56, NA = 6.02 x 1023 mol-1 )
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Assuming earth to be a sphere of a uniform density, what is the value of gravitational acceleration in a mine 100 km below the earth's surface (Given R = 6400km)
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An electron moves straight inside a charged parallel plate capacitor at uniform charge density σ.The space between the plates is filled with constant magnetic field of induction B→.Tim
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An electron moves straight inside a charged parallel plate capacitor at uniform charge density σ. The space between the plates is filled with constant magnetic field of induction B→.
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The magnetic moment produced in a substance of 1gm is 6 x 10-7ampere-metre2. If its density is 5gm/cm3, then the intensity of magnetisation in A/m will be
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For iron it's density is 7500 kg/m3 and mass 0.075 kg. If it's magnetic moment is 8 x 10–7 Amp x m2, it's intensity of magnetisation is
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For iron it's density is 7500 kg/m3 and mass 0.075 kg. If it's magnetic moment is 8 x 10–7 Amp x m2, it's intensity of magnetisation is
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The magnetic moment produced in a substance of 1gm is 6 x 10-7ampere-metre2. If its density is 5gm/cm3, then the intensity of magnetisation in A/m will be
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The root mean square speed of hydrogen molecules of an ideal hydrogen gas kept in a gas chamber at 0°C is 3180 m/s. The pressure on the hydrogen gas is (Density of hydrogen gas is 8.99 x 10-2 kg/m3, 1 atmosphere=1.01 x 105 N/m2)
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An air bubble of volume v0 is released by a fish at a depth h in a lake. The bubble rises to the surface. Assume constant temperature and standard atmospheric pressure P above the lake. The volume of the bubble just before touching the surface will be (density of w
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At standard temperature and pressure the density of a gas is 1.3 gm/ m3 and the speed of the sound in gas is 330 m/sec. Then the degree of freedom of the gas will be
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The mean free path of nitrogen molecules at a pressure of 1.0 atm and temperature 0°C is 0.8 x 10-7m. If the number of density of molecules is 2.7 x 1025perm3, then the molecular diameter is
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The density of a polyatomic gas is standard conditions is 0.795 kgm-3. The specific heat of the gas at constant volume is
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At the top of a mountain a thermometer reads 7°C and a barometer reads 70 cm of Hg. At the bottom of the mountain these read 27°C and 76 cm of Hg respectively. Comparison of density of air at the top with that of bottom is
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The root mean square speed of hydrogen molecules of an ideal hydrogen gas kept in a gas chamber at 0°C is 3180 m/s. The pressure on the hydrogen gas is
(Density of hydrogen gas is 8.99 x 10-2 kg/m3, 1 atmosphere=1.01 x 105 N/m
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The mean free path of nitrogen molecules at a pressure of 1.0 atm and temperature 0°C is 0.8 x 10-7m. If the number of density of molecules is 2.7 x 1025perm3, then the molecular diameter is
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At standard temperature and pressure the density of a gas is 1.3 gm/ m3 and the speed of the sound in gas is 330 m/sec. Then the degree of freedom of the gas will be
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An air bubble of volume v0 is released by a fish at a depth h in a lake. The bubble rises to the surface. Assume constant temperature and standard atmospheric pressure P above the lake. The volume of the bubble just before touching the surface will be (density of w
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The density of a polyatomic gas is standard conditions is 0.795 kgm-3. The specific heat of the gas at constant volume is
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At the top of a mountain a thermometer reads 7°C and a barometer reads 70 cm of Hg. At the bottom of the mountain these read 27°C and 76 cm of Hg respectively. Comparison of density of air at the top with that of bottom is
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A liquid of density d is pumped by a pump P from situation (i) to situation (ii) as shown in the diagram. If the cross-section of each of the vessels is a, then the work done in pumping (neglecting friction effects) is
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Two identical cylindrical vessels with their bases at same level each contains a liquid of density d. The height of the liquid in one vessel is h1 and that in the other vessel is h2. The area of either vases is A. The work done by gravity in equalizing t
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Two identical cylindrical vessels with their bases at same level each contains a liquid of density d. The height of the liquid in one vessel is h1 and that in the other vessel is h2. The area of either vases is A. The work done by gravity in equalizing t
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A liquid of density d is pumped by a pump P from situation (i) to situation (ii) as shown in the diagram. If the cross-section of each of the vessels is a, then the work done in pumping (neglecting friction effects) is
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A silicon specimen is made into a P-type semi-conductor by doping, on an average, one Indium atom per 5 x 107 silicon atoms. If the number density of atoms in the silicon specimen is 5 x 1028 atoms/m3, then the number of acceptor atom
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The dimensions of physical quantity X in the equation Force =XDensity is given by
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If solid sphere and solid cylinder of same radius and density rotate about their own axis, the moment of inertia will be greater for
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Water rises to a height of 10cm in capillary tube and mercury falls to a depth of 3.112cm in the same capillary tube. If the density of mercury is 13.6 and the angle of contact for mercury is 1350, the ratio of surface tension of water and mercury is
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In a U-tube the radii of two columns are respectively r1 and r2 and if a liquid of density d filled in it has level difference of h then the surface tension of the liquid is
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An air bubble of radius r in water is at a depth h below the water surface at some instant. If P is atmospheric pressure, d and T are density and surface tension of water respectively, the pressure inside the bubble will be
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1000 drops of water all of same size join together to form a single drop and the energy released raises the temperature of the drop. Given that T is the surface tension of water, r the radius of each small drop, r the density of liquid, J the mechanical equi
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