Question

In the given arrangement of the metre bridge, the null point is obtained at a distance $x$ from the end $A$. What will be the distance of the null point from $A$, if the radius of the wire $AB$ is doubled?

• A. $2x$
• B. $\frac{x}{2}$
• C. $x$
• D. $3x$

Answer 1

Answer: (C)

$x$

Null point is independent of radius of wire hence no change in null point if radius of wire is doubled

hence option C is correct