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a) Here temperature difference of junction is used to produce thermo e.m.f. and vice-versa.
b) This effect produced when junctions of a thermocouple are kept at dissimilar temperatures.
c) It is a reversible effect.
d) This effect depends upon nature of materials used to form junctions and temperature of junctions.
e) Different junctions are at dissimilar temperature.
p-type semiconductor: Consider a trivalent impurity such as Gallium (Ga, Z = 31) is doped in a pure semiconductor germanium (Ge, Z = 32). Each Ga atom forms three covalent bonds
To work out the gravitational potential energy of an object the equation is: GPE = m x g x h Where: m = the mass of the object (kg) g = gravitational field strength (on earth tha
In an amusement park ride called The Roundup, passengers stand inside a 19.0 -diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane.
This is due to the surface tension of water. Because of the surface tension , the drop tends to have minimum possible surface area, and the shape which is possible with minimum su
Triangle of force Two or more forces can be added or subtracted to produce a Resultant Force . If two forces are equal but act in opposite directions, then obviously they can
what is the equation for work
Correction of short sightedness To remove this defect a convex lens is used in front of eye.
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
Working of nicol prism and its uses as polarizer and analyzer
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