Interference is the process of superposition of two waves having same wavelength ,amplitude and frequency.When the waves interfere,there is no loss of energy.During constructive interference ,the two waves are added up to give a resultant wave of large amplitude.During destructive interference ,the two waves having same wavelength and amplitude arrive out of phase and cancel each other’s effect.At the point ...

Read More »## Difference between plane wave and spherical wave with examples

Plane waves In a plane wave disturbances travel in single direction. Plane waves examples For example when a string is fixed at both ends and the string is plucked at one end ,then transverse waves are generated in the string in which particles of the medium vibrate in one direction.So the transverse waves are plane waves.It is not possible in ...

Read More »## why are damping devices often used on machinery?

The damping devices are often used on machinery to increase the damping and reduce the vibrational effects caused due to running of machinery.These vibrational effects disturb the whole assembly and the building in which the machinery is working.The vibrational frequency of the machinery may cause the vibrations of large amplitude.To avoid this disturbance ,the damping devices are often used on ...

Read More »## Difference and relationship between stress and strain

Stress It is defined as the force applied on unit area to produce change in the shape,volume or length of a body.Mathematically it is expressed as: The SI unit of stress (σ) is newton per square meter (Nm-2),which is given the name pascal (pa). Stress may cause a change in length,volume and shape. Tensile stress When a stress changes the ...

Read More »## Difference between young’s modulus,bulk modulus and shear modulus

Young’s modulus The ratio of tensile stress to tensile strain is called young’s modulus. Young’s modulus formula Bulk modulus For three dimensional deformation,when volume is involved,then the ratio of applied stress to volumetric strain is called Bulk modulus.Mathematically it is expressed as: Bulk modulus formula Where ΔV is the change in original volume V. Shear modulus The ratio of shear stress ...

Read More »## Maxwell’s equations:Derivation in integral and differential form

The 4 Maxwell equations The basic equations of electromagnetism which are collection of Gauss’s law for electricity ,Gauss’s law for magnetism ,Faraday’s law of electromagnetic induction and Ampere’s law for currents in conductors are called Maxwell’s equations. These equations are part of comprehensive and symmetrical theory of electromagnetism,which is essential to understand electromagnetic waves,optics,radio and TV transmission,microwave ovens and magnetically ...

Read More »## Difference between BJT and FET in tabular form

The Difference between bjt and fet BJT FET 1:BJT (bipolar junction transistor ) is the bipolar device. 1:FET (field effect transistor) is a uni junction transistor. 2:Its operation depends on both ...

Read More »## Difference between mechanical and matter waves with examples

Mechanical waves The waves which required any medium for their propagation are called mechanical waves. mechanical waves examples Sound waves Water waves Vibration of string Waves produced on the surface of liquid and solid. Ultrasonic waves Spring waves Slinky waves mechanical waves properties These waves required medium for propagation or to travel. Their speed depend on medium in which it ...

Read More »## Dimensional analysis physics examples and practice problems

Dimensional analysis definition All the physical quantities can be expressed in terms of seven fundamental quantities.The powers to which these fundamental physical quantities be raised are termed as “dimensions”.Using the method of dimensions called dimensional analysis. Each base quantity is considered a dimension expressed by specific symbol written within square brackets.It stands for qualitative nature of physical quantity.For example different ...

Read More »## Difference between dot product and cross product in tabular form

The difference between dot product and cross product Dot product or scalar product Cross product or vector product If the product of two vectors is a scalar quantity,the product is called scalar product or dot product. If the product of two vectors is a vector quantity then the product is called vector product or cross product. The dot product ...

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