MHT CET 2021 22th September Morning Shift | Semiconductor Devices and Logic Gates Question 102 | Physics

In an n-p-n transistor 200 electrons enter the emitter in 10$$^{-8}$$ second. If 1% electrons are lost in the base, then the current that enters the emitter and the current amplification factor are respectively [e = 1.6 $$\times$$ 10$$^{-19}$$ C]

2 $$\times$$ 10$$^{-10}$$ A and 49

3.2 $$\times$$ 10$$^{-9}$$ A and 99

1.6 $$\times$$ 10$$^{-19}$$ A and 90

1.7 $$\times$$ 10$$^{-11}$$ A and 70

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

Combination of NAND gates is shown in the figure. It is equivalent to

MHT CET 2021 21th September Evening Shift Physics - Semiconductor Devices and Logic Gates Question 117 English

AND gate

NOR gate

OR gate

X-OR gate

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

In an ideal junction diode, the current flowing through PQ is

MHT CET 2021 21th September Evening Shift Physics - Semiconductor Devices and Logic Gates Question 115 English

2 $$\times$$ 10$$^{-3}$$ A

2 $$\times$$ 10$$^{-2}$$ A

4 $$\times$$ 10$$^{-3}$$ A

10$$^{-3}$$ A

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

LED is manufactured using zinc selenide then it emits.

infrared radiations

yellow light

blue light

green light

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