If we use `100 Omega` and `200 Omega` in place of `R` and `X` we get null point deflection, `l = 33cm`. If we interchange the resistors, the null point length is found to be `67 cm` Find end corrections `prop and beta`.
A. `alpha=1cm`, `beta=1cm`
B. `alpha=2cm`, `beta=1cm`
C. `alpha=1cm`, `beta=2cm`
D. None of these