What is the current through an ideal $P-N$ junction diode shown in the figure below? (in $mA$)

Nitrobenzene on reduction with zinc and $NH_4Cl$ gives

If a straight line perpendicular to $2x - 3y + 7 = 0$ forms a triangle with the coordinate axes whose area is $3 \text{ sq. units}$,then the equation of the straight line is:

The curves $(a), (b), (c)$ and $(d)$ show the variation between the applied potential difference $(V)$ and the photoelectric current $(i),$ at two different intensities of light $(I_1 > I_2).$ In which figure is the correct variation shown?

In the interval $(-3, 3)$,the function $f(x) = \frac{x}{3} + \frac{3}{x}, x \neq 0$ is :

$A$ body tied to a string of length $L$ is revolved in a vertical circle with minimum velocity. When the body reaches the uppermost point,the string breaks and the body moves under the influence of the gravitational field of the Earth along a parabolic path. The horizontal range $AC$ of the body will be