The Voltage time (V-t) graph of triangular wave having peak value $V_0$ is shown. The rms value of V in interval $t=0$ to $t=\large\frac{\pi}{4}$ is

Question

$(a)\;\frac{V_o}{\sqrt 3}\\(b)\;\frac{V_o}{2}\\ (c)\;\frac{V_o}{\sqrt 2} \\ (d)\;none\;of\;them$

Comments

How do you get the wave
equation: V=(Vo)(t)/(T/4)