If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

[Srinivasan]

If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced
beam, the lever arm of the beam, is

(A) d

(B) n

(C) d + n/3

(D) d - n/3

The correct Answer Is
(D) d - n/3