Physics · 2020
JEE Main · 3 September 2020, Shift 2 · Q19
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 ×…
If a semiconductor photodiode can detect a photon with a maximum wavelength of $\displaystyle 400$ nm , then its band gap energy is :
Planck's constant $\displaystyle \mathrm{h}=6.63 \times 10^{-34} \mathrm{~J}$.s.
Speed of light $\displaystyle \mathrm{c}=3 \times 10^8 \mathrm{~m} / \mathrm{s}$
Official answer
(1)
3.$\displaystyle 1$ eV
More from Semiconductor Electronics
- For the given logic gates combination, the correct truth table will be2023
- The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure. The estimated current…2021
- Refer to the circuit diagram given in the figure. which of the following observations are correct? A. Total resistance of circuit is 6 Ω B. Current…2025
- The logic operations performed by the given digital circuit is equivalent to:2023
- For the following circuit and given inputs A and B, choose the correct option for output ' Y '2023
- Which one of the following statement is not correct in the case of light emitting diodes? A. It is a heavily doped p-n junction. B. It emits light…2023
- The logic circuit shown above is equivalent to:2021
- Both the diodes used in the circuit shown are assumed to be ideal and have negligible resistance when these are forward biased. Built in potential in…2020
JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.