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

Which of the following semiconductor devices requires a reverse bias to operate?

The given characteristic curve is related to which electronic device?

The $I-V$ characteristic of an $LED$ is represented by which of the following graphs?

$A$ light emitting diode $(LED)$ has a voltage drop of $2\,V$ across it and passes a current of $10\,mA$ when it operates with a $6\,V$ battery through a limiting resistor $R$. The value of $R$ is $......\,k\Omega$.

Select the correct statement.