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Barrier potential in a P-N junction is caused by (A) Thermally generated electrons and holes. (B) Diffusion of majority carriers across the junction. (C) Migration
Q. Define: Peltier coefficient and write its unit. The quantity of heat energy absorbed or evolved at one of the junctions of a thermocouple when one ampere current flows for
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
FACTORS AFFECTING INDUCED EMF By experiment, the following factors may be noted: • The faster the magnet (or coil) is moved, the greater is the deflection obtained on the meter
Are fibers safe? Fiber optics are passive components, hence do not use power to generate light, like the case with lamps. When light conductors only carry light from one point
Where do you find the null points in the combined field due to the earth and a bar magnet, when i) the N-pole of the magnet is taken towards the north of the earth, ii) the
The most probable radius (in pm) for finding the electron He + is: (1) 0.0 (2) 52.9 (3) 26.5 (4) 105.8 Ans: (c)26.5
Conservation of angular momentum The overall angular momentum of any closed system remains constant. There are many other laws which deal with particle physics, as conserv
Q. Derive an expression for the intensity distribution due to Fraunhofer's diffraction at a single slit and shows that the intensity of the first subsidiary maxima is about 4.5 p
Explain the Machine A machine is anything that makes work easier. Does it do the work for you? No, you don’t get something for nothing in this world, but it can make the work e
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