Why are photodiodes used preferably in reverse bias condition?

(a) distinguish between metals inlsulators and simi conductors on the baisi of their energy bands (b) why are photodiodes used preferabley in reverse bias condlition can it detect a wavelength of 6000 nm justify

Why is a photodiode preferable used in the reverse bias condition for measuring light intesity?

Phot diodes are preferable used in reverse bias conditions for measuring light intensity because

Why is photodiode used in reverse bias ?

Why should a photodiode br operated in reverse biased mode?

Why photodiodes are required to operate in reverse bias explain.