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surface tension can be explained in given possible waysi the property of a liquid on account of which it tends to keep minimum number of
it is found that when a liquid is free from the external forces it always gets the shape of a spherical drop it is due to for a needed mass a sphere
the intermolecular forces f of attraction can be described as given1 cohesion the force of attraction among molecules of the same substance
when two molecules approach each other the charges in each are disturbed and redistributed in a fashion that the average distance among the unlike
when a spherical body goes by a viscous fluid it feels a viscous force the value of the viscous force increases with the enhance in speed of the
the property of liquids or gases by virtue of which a backward dragging force viscous drag acts tangentially on the layers of the liquid in motion
although it needs not concern us further we also consider that the flow is irrotational to check for this property let a tiny grain of dust goes with
viscosity in fluids is the analog of friction in solids both are methods by which the kinetic energy of moving bodies can be changed into thermal
it explains that when an object is immersed partly or completely in a liquid it loses in weight similar to the weight of the liquid displaced by
the atmospheric pressure at any position is numerically similar to the weight of a column of air of unit cross-sectional area extending from that
when an electron makes transition from higher energy level having energy e2n2 to a lower energy level having energy e1 n1 then a photon of frequency
binding energy of a system is described as the energy released when its constituents are brought from infinity to form the system it can also be
in x-ray tube when high speed electrons strike the target they move into the target they lose their kinetic energy and come to rest inside the solid
i x-rays are electromagnetic waves with wavelength lie among 01aring - 100aringii x-rays is invisibleiii they always go in a straight line
depending upon the penetration power there are two parts of x-rayshard x-raysmore penetration powermore frequency of the order of asymp 1019 hzlesser
x-rays was discovered by scientist rontgen thats why they are also known as rontgen pulsesrontgen discovered that when pressure inside a discharge
a device which changes light energy into electrical energy is known as photoelectric cell it is also known as photocell or electric
it is the phenomenon of emission of electrons from the surface of metals when light radiations electromagnetic radiations of suitable frequency drop
according to eisensteins quantum theory light propagates in the bundles of power every packet being called as photon and possessing
it is explained by heisenbergs uncertainty principle it is impossible to calculate simultaneously both the position and the momentum of the
i a matter pulse is not electromagnetic in behaviorii practical observation of matter waves is possible only when the de-broglie wavelength is of the
i these are positive ions having similar mass if the experimental gas does not have isotopes however if the gas has substances then positive pulses
cathode rays discovered by sir willium crooke are the stream of electrons they may be given by using a discharge tube containing gas at a low
the process of changing of a heavy nucleus into two lighter nuclei of comparable masses after bombardment with a energetic particle with liberation
the neutrons and protons in a stable nucleus are held together by nuclear forces and energy is required to pull them infinitely apart or the similar