λ=400nm
Band gap E0=λhc=4001237.5=3.09eV
JEE Main 2020 — Physics Modern Physics
If a semiconductor photo diode can detect a photon with a maximum wavelength of 400nm, then its band gap energy is: Planck's constant h=6.63×10−34J.s
Speed of light c=3×108ms−1
Held on 3 Sept 2020 · Verified 6 Jul 2026.
1.1eV
2.0eV
1.5eV
3.1eV
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