In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x. what would b e its value if the radius of the wire AB is doubled:-

Explanation

For null deflection of galvanometer in a metrebridge experiment,
`(R_(1))/(R_(2))=(R_(AC))/(R_(CB))=(x)/((100-x))`
Since `R_(1)//R_(2)` remains constant, `x//(100-x)` also remains constant. The value of x remains as such.
`therefore "Length of AC = x"`