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During an experiment with a metre bridge...

During an experiment with a metre bridge, the galvanometer shows a null point when the jokey is pressed at 40 .0 cm using a standard resistance of `90Omega` , as shown in the figure . The least count of the scale used in the metre bridge is 1mm. The unknown resistance is

A

`60+-0.15Omega`

B

`136=5+-0.56Omega`

C

`60=5+-0.25Omega`

D

`135=5+-0.23Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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