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rutherfordrsquos atomic model failurerutherford proposed that the electrons circulate around the nucleushowever according to electromagnetic theory
natural and forced vibrationswhen we strike a tuning fork with a rubber hammer it vibrates with certain frequencythe frequency does not change even
to determine the acceleration due to gravity using a simple pendulumapparatus pendulum meter scale stand stop watch vernier callipersprocedure1 the
artificial satellites1 satellites help to develop reliable communication links between different countries separated by large distances on the
the pd at the feeder end of a two wire dc distributor is 600 volts two loads are connected to the distributor at distances of 600 feet and
an open platform elevator is moving down a mine shaftafter the elevator has travelled 25m from the top of the shafta stone is dropped from the top of
a jet of engine on a test tube takes in 20kg of air per second at a velocity of 100ms and burns 08kg of fuel per secondafter compression and heating
motion of an object in a plane is known two dimensional 2-d motions for 2-d motion acceleration or velocity can be defined by two elements in any two
motion of an object in a straight line is known one dimensional motion the location of a particle in one dimensional motion can be defined by only
until the time of einstein mass and energy were considered as two different physical quantities but in 1905 with the help of postulates of the
lorentz was the first to obtain the equations which relate the space and time coordinate of two frames of reference moving with a constant velocity
lorentz transformation the postulate of str is proposed by einstein in 1905 the two postulates are1 principle of equivalence according to
inertial frame of reference if in a given system a free object does not experience any acceleration or force the system is called the inertial frame
consider a particle of energy e is incident from the left on a rectangular potential barrier of height and width and on both sides of this barrier at
mass energy relation - the total energy of a body is the sum of its kinetic energy and rest mass energy particle having rest mass zero always move
time dilation relativity of time is the proper time interval is dilated when it is measured by an observer with reference to whom it has uniform
length contraction relativity of length is the length of a body moving with a relativistic velocity v c relative to an observer is contracted by a
postulates of special theory of relativity-1 all law of physics having same form in all inertial frame of reference2 the speed of light in free space
galalian transformation is the equation that relation the time and position coordinates of a particle from one inertial frame to another
special theory of relativity deals with the relativity of motion and of rest is called theory of relativity in broad sense it divides into two
physical interpretation of wave function einstein proposed a historic relationship between energy and mass using postulates of str the variation of
q define fermi energy write down the expression for fermi dirac distribution law deduce an expression for fermi energy of a system of free
q explain what do you understand by the terms potential well and potential barrier how does a particle with energy lesser than the barrier height
physics is one of the types of science. science works according to scientific method . the scientific method accepts only logic
in what depends the charge that each material has? like glass positive polystyrene negative and ebonite negative at the moment of charge a rod of