If a semiconductor photodiode can detect a photon with a maximum wavelength of 400 nm, then its band gap energy is : Planck’s constant h = 6.63 $ \times $ 10–34 J.s. Speed of light c = 3 $ \times $ 108 m/s

Question

If a semiconductor photodiode can detect a photon with a maximum wavelength of 400 nm, then its band gap energy is :

Planck’s constant h = 6.63 $ \times $ 10^–34 J.s. Speed of light c = 3 $ \times $ 10⁸ m/s

1.5 eV