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According to Rutherford's experiment when a sample of radioactive substance is place in a lead box and permit the emission of radiation by a small hole only. When the radiation enters into the external electric field, they divide into three parts
(i) Radiations which deflects towards negative plate are known as alpha- rays (stream of positively charged particles)
(ii) Radiations which deflects towards positive plate are known as Beta-particles (stream of negatively charged particles)
(iii) Radiations which are undeflected known as Gamma rays. (E.M. waves or photons)
Wien's displacement law constant, b It is the constant of the Wien displacement law. It contains the value 2.897 756 x 10 -3 m K.
It is the opposition offered by the material of the flux. Reluctance α mean length of flux path and reluctance α 1/cross section A Reluctance=1/μ 0 μ r A Here μ 0 a
A rectangular rosette is mounted on a test structure as shown, loads are applied, and the following strains are measured by strain gage elements 1, 2, and 3: ε 1 = 1500 μm/ m ε
The Venturimeter (see figure) is a device used to calculate the flow speed of a fluid in a pipe. At the throat, the area is decreased from A to a and the velocity is increased from
Liebig condenser (iron) A piece of iron pipe line as is used for water or electric conduit can be used to make a metal condenser which is much more robust than a glass one. Inl
Measurement of length: If the Zeroth division of the head scale does not coincide with the index line the Screw gauge has Zero error. If the Zeroth division of the head Sca
what is the acceleration due to gravity?
Advantages of fibre optics: Fibre-optic communications systems have a large bandwidth, e.g. 1 GHz. The bandwidth is the maximum rate at which information can be transmitted.
A long solenoid is fabricated by closely winding a wire of radius 0.5 mm over a cylindrical nonmagnetic frame so that the successive turns nearly touch every other. What would be t
Anti ferromagnetic materials such as chromium have a small but positive susceptibility. They cannot possess any magnetization is the absence of an applied field, in contrast to fer
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