If $f(x) = x^3 - 6x^2 + 9x + 3$ is a decreasing function,then $x$ lies in

$Al$ vessels should not be cleaned with materials containing washing soda because.......

Which of the following is the pair of biofertilizers?

Two sources of equal $emf$ are connected to an external resistance $R$. The internal resistances of the two sources are $R_1$ and $R_2$ $(R_2 > R_1)$. If the potential difference across the source having internal resistance $R_2$ is zero,then:

The logic gate equivalent to the circuit shown in the figure is

Consider a solid insulating sphere of radius $R$ with charge density varying as $\rho = \rho_0 r^2$ (where $\rho_0$ is a constant and $r$ is measured from the centre). Consider two points $A$ and $B$ at distances $x$ and $y$ respectively from the centre,such that $x < R$ and $y > R$. If the magnitudes of the electric fields at points $A$ and $B$ are equal,then: