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Radio Waves:
Radio waves are electromagnetic waves with large range of wavelength from a few millimetres to many meters.
Gamma Rays: The wave length of gamma rays is less than 10-11 m.
An open barge has the dimensions 22x40x12m. If the bargeis made out of 4.0-cm-thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in f
It is the property of a material by virtue of which it allows itself to be magnetized. Permeability varies from material to material depending upon the saturation and temperature.
Differentiate between displacement current and conduction current.
The acceleration of a falling ball The change in speed per second of a moving body is called the acceleration. When it is constant as in the case of a ball falling under the ac
The Schottky diodes are a semiconductor diode with a low forward voltage drop and a very fast switching action. The voltage drop at forward biases of around 1ma is in the range 0.1
Illustrate a labelled diagram of Hertz's experimental set-up to produce electromagnetic waves. Describe the generation of- electromagnetic waves using this set-up.
What type of material in optical fibres used? Material in optical fibres: Optical fibres are generally made along with two kinds of materials that are glass (silica) and pla
Waves: A disturbance that travels by a medium is called wave.
Wiedemann-Franz law: The ratio of thermal conductivity of a particular pure metal to its electrical conductivity is approximately constant for any given temperature. This law
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