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A resistance R is to be measured using a...

A resistance R is to be measured using a meter bridge. Student chooses the standared resistance S to be `100 Omega`. He finds the null point at `l_(1)=2.9cm`. He is told to attempt to improve the accuracy. Which of the folllowing is a useful way?

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A resistance R is to be measured using a meter bridge. Student chooses the standard resistance S to be 100 Omega . He finds the null point at l_(1)=2.9cm . He is told to attempt to improve the accuracy. Which of the following is a useful way?

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