Let three be a spherically symmetric charge distribution with charge density varying as $\rho (r) = \rho_0 = \rho_0 \bigg( \large\frac{5}{4} -\frac{r}{R} \bigg)$ upto $r = R,$ and $\rho(r) = 0$ for $r > R,$ distance from the origin. The electric field at a distance $r(r < R)$ from the origin is given by

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