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Q. Illustrates the branches of physics?
Answer:-
The basic branches of physics are classical mechanics electromagnetism including thermodynamics, optics, relativity and quantum mechanics.
Explain how was the length of a standard meter redefined in the year 1983?
Seeing as 1983 the meter has been defined as the distance light travels in a vacuum in exactly 1⁄ 299,792,458th of a second.
It is based on the photovoltaic effect. One of the semiconductor regions is made so thin that the light incident on it reaches the p-n junction and gets absorbed. It changes solar
Properties of Lines of Flux To make the imaginary lines of flux describe the behaviour of the magnetic field we must give them appropriate properties. Thus lines of flux have
What is black hole
Q. Action to be made if the resistance to earth of earth electrode is high? Ans: Earth resistance lies upon soil conductivity. To reduce earth resistance dig around the earth
mass of body= 4 kg is dropped form height= 45 m Calculate the kinetic energy just before hitting the ground
Explain the term 'dielectric constant' of a medium in terms of capacitance of a capacitor. Draw a graph showing variation of resistivity of carbon with temperature
introduction about earth''s magnetic field
An express train, traveling at 36.0 m/s, is accidently sidetracked onto a local train track. The express engineer spots a local train exactly 100 m ahead of the same track and trav
discuss the positive and negative of militancy
Nichrome: Nichrome is an alloy of Manganese 1.5%, nickel 75% to 78%, chromium 20% to 23% and a little percentage of iron. Properties: 1. Its elec trical resistivity
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