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A serviceable spring balance
The quality of rubber deteriorates rather rapidly in unfavourable climatic conditions; a coiled steel spring is preferable. The pattern defined has been found satisfactory. The coil is protected from injure by enclosing it in a tube.
The reading is made at the bottom of the tribe on a graduated wooden plunger. First wind the spring attach it by a screw eye to a piece of dowelling which will fit into the tube selected (bamboo or plastic).Fasten the other end of the spring by a wire staple to a wooden stick which will glide in the tube. Fix the dowelling to the top of the tube and put in into it a hook for suspending the balance. Screw one more hook into the wooden plunger which can now be graduated.
What is electric flux? Write its S.I. units. Using Gauss's theorem, assume an expression for the electric field at a point because of a uniformly charged infinite plane sheet.
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Q. State any three properties of the nuclear forces. (i) A Nuclear force is charge independent. (ii) A Nuclear force is the strongest recognized force in nature. (iii) Nucl
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