COMEDK 2024 Morning Shift | Semiconductor Devices and Logic Gates Question 10 | Physics

Though $$\mathrm{Sn}$$ and $$\mathrm{Si}$$ are $$4^{\text {th }}$$ group elements, $$\mathrm{Sn}$$ is a metal while $$\mathrm{Si}$$ is a semiconductor because

$$\mathrm{Sn}$$ has more electrons than $$\mathrm{Si}$$

The energy gap of $$\mathrm{Sn}$$ is zero volt while that of $$\mathrm{Si}$$ is $$0.07 \mathrm{~V}$$

The energy gap of $$\mathrm{Sn}$$ is $$1.1 \mathrm{~eV}$$ volt while that of $$\mathrm{Si}$$ is $$0.07 \mathrm{~V}$$

$$\mathrm{Sn}$$ has more holes than $$\mathrm{Si}$$

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

-0

A transistor is connected in CE configuration. The collector supply is $$10 \mathrm{~V}$$ and the voltage drop across a resistor of $$1000 \Omega$$ in the collector circuit is $$0.5 \mathrm{~V}$$. If the current gain factor is 0.96 , then the base current is

$$25_6 \mu \mathrm{A}$$

$$20.8 \mu \mathrm{A}$$

$$22.5 \mu \mathrm{A}$$

$$15 \mu \mathrm{A}$$

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

-0

Which logic gate is represented by the following combination logic gates?

COMEDK 2023 Morning Shift Physics - Semiconductor Devices and Logic Gates Question 16 English

NAND

AND

NOR

COMEDK 2023 Morning Shift

MCQ (Single Correct Answer)

-0

An LED is constructed from a $$p$$-$$n$$ junction diode using GaAsP. The energy gap is $$1.9 \mathrm{~eV}$$. The wavelength of the light emitted will be equal to

$$10.4 \times 10^{-26} \mathrm{~m}$$

$$654 \mathrm{~nm}$$

$$654 ~\mathop A\limits^o$$

$$654 \times 10^{-11} \mathrm{~m}$$

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