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In post office box experiment Q/P=1/10. ...

In post office box experiment `Q/P=1/10.` In `R` if 142 `Omega` is used then we get deflection towards righ and if `R=143 Omega`, then deflection is towards left. What is the range of unknown resistance?

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
`P/Q=R/Ximplies X=(Q/P)R=(1/10)R`
`R` lies between `142Omega and 143 Omega`
therefore, the unknown resistance `X` lies between `14.2 Omega and 14.3 Omega`
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