An $LED$ is a $p-n$ junction diode which is

The given characteristic curve is related to which electronic device?

$A$ $CCD$ camera is fabricated using a semiconducting material having a band gap of $3 \ eV$. The wavelength of light it can detect is nearly (in $nm$)

Explain the construction and working of a photodiode.

The schematic symbol of a light emitting diode $(LED)$ is:

Three photodiodes $D_{1}, D_{2}$ and $D_{3}$ are made of semiconductors having band gaps of $2.5 eV, 2 eV$ and $3 eV$,respectively. Which one will be able to detect light of wavelength $600 nm$?