During an experiment with a metre |Physics|JEE ADVANCED 2014

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JEE Advanced 2014

Paper-2 2014

Question

During an experiment with a metre bridge, the galvanometer shows a null point when the joceky is pressed at 40.0 cm using a standard resistance of $90 \Omega$, as shown in the figure. The least count of the scale used in the meter bridge is 1 mm . The unknown resistance is :

Select the correct option:

A

$60 \pm 0.15 \Omega$

B

$135 \pm 0.56 \Omega$

C

$60 \pm 0.25 \Omega$

D

$135 \pm 0.23 \Omega$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

For balanced meter bridge

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