The output $$\mathrm{Y}$$ of following circuit for given inputs is :

The acceptor level of a p-type semiconductor is $$6 \mathrm{~eV}$$. The maximum wavelength of light which can create a hole would be : Given $$\mathrm{hc}=1242 \mathrm{~eV} \mathrm{~nm}$$.

The correct truth table for the following logic circuit is :

The output (Y) of logic circuit given below is 0 only when :