If a semiconductor photodiode can detect a photon with a maximum wavelength of , then its band gap energy (in eV) is :
Planck's constant
Speed of light
The output characteristics of a transistor is shown in the figure. When $V_{C E}$ is 10 V and $I_C=4.0 \mathrm{~mA}$. then value of $\beta_{a c}$ is _______.
Two Zener diodes ( $A$ and $B$ ) having a breakdown voltage of 6 V and 4 V respectively, are connected. The voltage $\mathrm{V}_0$ variation with $\mathrm{V} / \mathrm{p}$ voltage linearly increasing with time is given by: $\left(V_{\text {input }}=0\right)$ (V at $\left.\mathrm{t}=0\right)$
