A) There will be no change
B) Null point will shift to \[{{\operatorname{L}}_{1}}\] / 2 point
C) Null point will shift to 2\[{{\operatorname{L}}_{1}}\] point
D) Null point will not be available
Correct Answer: A
Solution :
| Option [a] is correct. |
| Explanation: For a balanced Meter Bridge \[\operatorname{P}/Q={{\operatorname{L}}_{1}}/(100-{{\operatorname{L}}_{1}})\]. |
| There is no parameter related to the radius of the wire. So, the null deflection of galvanometer does not depend on the radius of the wire. So, even if the radius of the wire is doubled, the null deflection of the galvanometer will not be changed. |
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