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In meter bridge experiment AB is wire of 1m of uniform cross section area. If resistivity of AB wire isrho, null point is obtained at a point 'l_(1)'distance from A. If resistivity is 2rho,null point will be 'l_(2)' from A and if left half of the wire has resistivity rhoand right half has resistivity 2rho,then null point is at'l_(3)'. Choose the correct statement: |
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Answer» `l_(1)=l_(2)=l_(3)` If LEFT half has resistivity `rho`and right half has resistivity `2rho`then to get some ratio null point has to be shifted towards right `l_(3) gt l_(2)`. |
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