Question
Assertion : A $P-N$ photodiode is made from a semiconductor for which $E=2.8 eV$. This photo diode will not detect the wavelength of $6000 nm$.
Reason : A $P N$ photodiode detect wavelength $\lambda$ if $\frac{h c}{\lambda}>E_g$.
Reason : A $P N$ photodiode detect wavelength $\lambda$ if $\frac{h c}{\lambda}>E_g$.