In a meter bridge experiment,
S is a standard resistance and
R is a resistance wire. It is found that balancing length is
l=25 cm. If
R is replaced by a wire of half the length and half diameter, those of
R (of the same material), then the balancing distance
l′ (in cm) will now be
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1518008/original_PYQ_mains_2020_9__jan_evng_23.png)