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Eddy currents can be briefly explained as currents produced due to induced emf in the form of eddies or ripples.Hysteresis laws mainly consists of 2 topics retentivity and coercivity.when magnetising field=o and the intensity of magnetisation doesnot become zero at dat time but it is mere to the saturated value then it is called retentivity.The reverse mag. field applied to demagnetise the specimen is called coercivity.
Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity
Production of electricity by light: The Photovoltaic Cell or Solar Cell. A photovoltaic cell generates an emf when light falls onto it. Several forms of photovoltaic cell exi
what is the formula of accelaration
A ray of light travelling in air is incident on a prism and passes through it with a speed of 2X10 8 ms -1 parallel to its base. If the angle of refraction is similar to half of
The magnitude of the force vector F is 270 newtons. They component of this vector is directed along the +y axis and has magnitude of 150 N. The x component is directed along the +x
When two dissimilar sound rays of slightly different frequencies, traveling in a phase along the same direction, superimpose on one other, the intensity of the resultant sound at a
Electromagnetic radiations: What are the common features among all the Electromagnetic radiations? Ans: 1. They all can be described in terms of oscillating electric and ma
A sled and its rider are perched at the top o a hill that is 35 m tall. If the gravitational potential energy is 3.0 x 10 4 J. What is the weight of the sled and rider?
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what is necol prism and give construction and working
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