Work-Energy-Power

Work, Energy and Power Work is said to be done by a force action on a body, provided the body is displaced actually in any direction except in a direction perpendicular to the direction of the force.  absolute unit of work is Joule and ergs. 1 joule = 10^7 ergs. Gravitational unit of  work is

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Dual nature of matter; Atom and Nuclie

Dual Nature of matter and radiation J Thomson predicted that the cathode rays are nothing but the stream of fast moving electrons. The number of photoelectrons emitted per second is directly proportional to the intensity of the incident radiations. Above the threshold frequency, the maximum kinetic energy of the emitted photoelectron is independent of the

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Electromagnetic-waves

Marconi is consider as the father of wireless communication. Maxwell displacement current is that current which comes into play in that region in which the electric field and the electric flux is changing with time. The maxwell’s concept that a changing electric field with times give rise to displacement current also produces a magnetic field

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electromagnetism

Phenomenon of generating current e.m.f. by changing magnetic fields is called Electromagnetic Induction Magnrtic flux = B.A= BACos weber An e.m.f. is induced in a coil, when amount of magnetic flux linked with the coil changes with time. Faraday’s laws of electromagnetic induction Ist law: whenever the amount of magnetic flux linked with a circuit

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Physcis-scientific-assistance

A pin hole box is the example of ideal black body. Light year is the unit of distance. Permanent magnet can be made from cobalt. Compton effect is associated with x-rays. Compton effect, increase in wavelength of X-rays and other enegetic electromagnetic radiationd that have been elastically scattered by electrons. It is a principle way

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Magnetism

The branch of physics which deals with the magnetism due to electric current is called electromagnetism. Conceptual points When a proton entered a strong magnetic field along the field direction, the force experienced by protons if, F= qvB sin0 =0. Therefore, the path and the velocity of the proton will remain unchanged. When current flows

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Currentaffairs13/june/2018

1. North Korea pledged to move towards complete denuclearization, while the US promised is old fie security guarantees. 2. RBI said to Parliamentary Standing Committee on finance that all “three lines of defence” built in the banking system failed in the case of Nirav Modi. First, the officer sanctioning the loan; second, the managerial level

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Current affairs 18 june 2018

 Indigenously built upgraded artillery gun Danush, successfully completed its final trails. It is soon going to be inducted in Army. Dhanush is an upgraded version of Swedish Bofors gun. Acoording to the Composite Water Management Index developed by NITI Ayog , 70% of the water resources are identified as polluted. The committee on restructuring the

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currentelectricity

Current Electricity The branch of physics which deals with the charge in motion is called current electricity. The charged particle whose flows in a definite direction constitutes the electric current are called current carriers. In solid conductors, valence electrons are the current carriers. In Liquids, current carriers are positively and negatively charged ions. In gases,

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Electrostatic

Electrostatic The branch of physics that deals with the study of charges at rest, the forces between the static charges, fields, and potentials due to these charges is called Electrostatics or Static Electricity or even Frictional Electricity. Historically, this phenomenon was discovered around 600BC by a Greek Philosopher ‘Thales of Miletus’. The Additional Property of

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