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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 jockey 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 1 mm. The unknown resistance is

A

a)`60+-0.15Omega`

B

b)`135+-0.56Omega`

C

c)`60+-0.25Omega`

D

d)`135+-0.23Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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