Q1 · medium · AI-verified
In a p-n junction diode, when forward biased, the width of the depletion layer:
- Remains unchanged
- Decreases
- First increases then decreases
- Increases
Q2 · easy · AI-verified
According to Bohr's model, what happens when an electron jumps from a higher energy level to a lower energy level?
- No energy change occurs
- A photon is absorbed
- An electron is emitted
- A photon is emitted
Q3 · medium · AI-verified
Which logic gate gives an output of 1 only when all inputs are 0?
- NAND gate
- NOR gate
- AND gate
- XOR gate
Q4 · medium · AI-verified
Which of the following is a majority carrier in a p-type semiconductor?
- Holes
- Protons
- Neutrons
- Electrons
Q5 · medium · AI-verified
The half-life of a radioactive substance is 20 minutes. What fraction of the original substance remains after 1 hour?
- 1/6
- 1/16
- 1/8
- 1/4