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To free a charged a particle freely in air under the persuade of electric field its downward weight should be balanced by upward electric force for instance if a positive charge is suspended freely in an electric field as shown then
An alternating voltage v=250sin800t volts is applied across a series circuit having a 30 resistor and 50µF capacitor. Calculate (a) the circuit impedance, (b) the current ?
Which one of the following pairs is not correctly matched: (1) Rutherford-Proton (2) J.J. Thomsom-Electron (3) J.H. Chadwick-Neutron (4) Bohr-Isotope Ans:(4)Bohr-Is
When a metal becomes a superconductor, there is a tremendous decrease in it's: a) Total volume b) Electrical resistance c) Length d) Density Ans: While a
(i) It is also known as impure semiconductor. (ii) The phenomena of adding impurity is known as Doping.
what is the angle of incidence when the refracted and the reflected ray are parallel to one another? does this angle depend on the wavelength of light? Ans) The angle of inciden
The power of change of angular displacement with respect to time is known as angular velocity.
how Michelson interferometer can be used to measure the wavelength of sodium light.
The charge and discharge characteristics of lead battery: During discharge the plates are converted into lead sulphate, the water content of the electrolyte increases, the inte
What is waveguide dispersion in optical fibres? Waveguide dispersion (Δτ w ): Waveguide dispersion occurs because of the dependence onto the velocity of propagation of every
One of the Maxwell's e-m equations involves the curl of the electric field. Write down the equation and mention the law of electromagnetism which is shown by the equation.
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