Advertisements
Advertisements
प्रश्न
ASSERTION (A): The electrical conductivity of a semiconductor increases on doping.
REASON (R): Doping always increases the number of electrons in the semiconductor.
विकल्प
Both A and R are true and R is the correct explanation of A
Both A and R are true and R is NOT the correct explanation of A
A is true but R is false
A is false and R is also false
उत्तर
A is true but R is false
APPEARS IN
संबंधित प्रश्न
In an n-type silicon, which of the following statement is true:
Answer the following question.
Three photodiodes D1, D2, and D3 are made of semiconductors having band gaps of 2.5 eV, 2 eV, and 3 eV respectively. Which of them will not be able to detect light of wavelength 600 nm?
In the case of metals, the valence and conduction bands ______.
In the case of semiconductors, the valence and conduction bands ______.
The electrons in the conduction band of a semiconductor are
Explain why elemental semiconductor cannot be used to make visible LEDs.
The energy band gap of semiconducting material to produce violet (wavelength = 4000 Å).
LED is ______ eV. (Round off to the nearest integer)
When a diode is forward biased, it has a voltage drop of 0.5 V. The safe limit of current through the diode is 10 mA. If a battery of emf 1.5 V is used in the circuit, the value of minimum resistance to be connected in series with the diode so that the current does not exceed the safe limit is ______.
Draw an energy band diagram for a p-type semiconductor at T > 0 K.
Draw an energy band diagram for an n-type semiconductor at T > 0 K.
