Answer & Solution
Answer: Option B
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12. In atoms of germanium, arsenic, selenium and bromine there are . . . . . . . . orbits.
13. When a piece of pure silicon is doped with aluminium, then
14. . . . . . . . . is a semiconductor
15. Light Emitting Diode (LED) is used in electronic devices, such as television emits . . . . . . . .
16. Consider the following statements.
1. A p - n junction diode is a basic semiconductor device.
2. A p - n junction diode can work as excellent rectifier.
3. The p - n junction diode cannot be used as a half-wave rectifier.
Which of the statements given above is/are correct?
1. A p - n junction diode is a basic semiconductor device.
2. A p - n junction diode can work as excellent rectifier.
3. The p - n junction diode cannot be used as a half-wave rectifier.
Which of the statements given above is/are correct?
17. Avalanche breakdown is due to
18. Silicon is which type of material?
19. Consider the following statements.
1. Zener diode is not used as a voltage stabiliser.
2. A Solar cell is a p - n junction diode which converts electrical energy into solar energy.
3. LED is an important light source used in optical communication.
Which of the statement given above is/are correct?
1. Zener diode is not used as a voltage stabiliser.
2. A Solar cell is a p - n junction diode which converts electrical energy into solar energy.
3. LED is an important light source used in optical communication.
Which of the statement given above is/are correct?