A cantilever beam $\mathbf{P Q}$ of uniform flexural rigidity $(E I)$ is subjected to a concentrated moment $M$ at $\mathbf{R}$ as shown in the figure
The deflection at the free end $\mathbf{Q}$ is
(A) $\frac{M L^{2}}{6 E I}$
(B) $\frac{M L^{2}}{4 E I}$
(C) $ \frac{3 M L^{2}}{8 E I}$
(D) $\\frac{3 M L^{2}}{4 E I}$
A cantilever beam $\mathbf{P Q}$ of uniform flexural rigidity $(E I)$ is subjected to a concentrated moment $M$ at $\mathbf{R}$ as shown in the figure
The deflection at the free end $\mathbf{Q}$ is
(A) $\frac{M L^{2}}{6 E I}$
(B) $\frac{M L^{2}}{4 E I}$
(C) $ \frac{3 M L^{2}}{8 E I}$
(D) $\\frac{3 M L^{2}}{4 E I}$