. A photodiode has two terminals: a cathode and an _____.

Two $p$ - $n$ photodiodes are fabricated from semiconductors with band gap of $2.8\mathrm{eV}$ and $2.6\mathrm{eV},$ respectively.

Choose the correct statement from the following.

To detect light of wavelength $500 \mathrm{nm}$, the photodiode must be fabricated from a semiconductor of minimum bandwidth of

Statement-1 : Light emiting diode (LED) emits spontaneous radiation.

Statement-2 : LED is forward-biased p-n junction.