Question Text
Question 3 :
The vacancy created due to the absence of an electron in the valence band of a semiconductor is called a _________ .
Question 4 :
Among the following, the wrong statement in the case of semiconductor is:<br/>
Question 6 :
The ratio of electron and hole currents in a semiconductor is $7/4$ and the ratio of drift velocities of electrons and holes is $5/4$, then the ratio of concentrations of electrons and holes will be
Question 7 :
<span>The electrical conductivity of a semiconductor increases when radiation of the wavelength shorter than $2480nm$ is incident on it.The bandgap (in eV) for the semiconductor is</span>
Question 9 :
Three semiconductors are arranged in the increasing order of their energy gap as follows: the correct arrangement is