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State the Working of UJT
Make circuit arrangement as demonstrated in fig.(c), where UJT is represented by its equivalent circuit comprising resistances RB1, RB2 and a diode D. Generally B2 is kept positive with respect to B1. A variable positive voltage is supplied to emitter through a switch S.
A medium is known as denser if the velocity of ray in that phase is fewer than the speed of the wave in other phase. In comparison to air velocity of sound is main in water,
what is the tension in the string when the block is lifted at a steady speed when the weight weighs 4.5N and the distance is 90cm
uses of diode
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A simple tripod A useful tripod can be made by cutting away the sides of a tin can. It is suitable to make two or three of these to suit dissimilar burners and for use as stand
Two circular coils, one of radius r and the other of radius R are placed coaxially with their centres coinciding. For R >> r, get an expression for the mutual inductance of the arr
Explain the terms 'Magnetic Dip' and 'Magnetic Declination' with the help of relevant diagrams.
Determine the real position of an air bubble in a glass cube of side 0.3m if the bubble seems to be at a distance of 0.05 m from one face and at 0.15m from the opposite face.
A machine gun fires a bullet of mass 40 g with a velocity 1200 m/s The man holding it, can exert . a maximum force of 144 N on the gun. How many bullets can he fire per second at
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