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Making spheres with surface tension
Search a glass jar and fill it about two-thirds full of commercial alcohol. With a medicine dropper place some drops of oil in the alcohol and then fill up the jar with water. If you get the correct mixture, the oil spheres will float down to about the middle of the jar. The oil droplets are pulled into ideal spheres by surface tension.
Arrive at the mathematical expression for dispersive power of the material of a prism in terms of angle of deviation. Determine the critical angle for the material of refractiv
Q. Explain why does heated air expand? Answer:- Temperature is habitually defined as the average thermal energy of the substance at hand. Therefore the hotter a substance
a) Heat produced is directly proportional to the square of the current passing by a conductor. b) This effect is produced because of collision of free electrons with positive io
Working: When plate potential (V p ) is positive, plate current ( I p ) flows in the circuit (because some emitted electrons reach to plate). If + V p enhances I p also increas
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A CAR MOVING AT 25m/s ALONG A STRAIGHT LEVEL ROAD EXPERIENCE A RESISTANCE WHICH PRODUCES A RETARDATION OF 0.0001 V^3,WHERE V IS THE VELOCITY IN m/s.FIND THE DISTANCE TRAVELLED AND
In an electric field rate of change of potential with distance is called as potential gradient. It is a vector quantity and its direction is differing to that of electric field. Po
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