Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Choose the FALSE statement from the following.

A
Generally, in conductors the valence and conducting bands overlap.
B
The resistivity of a semiconductor increases with increase in temperature
C
The conductivity of a semiconductor increase with increase in temperature
D
Substances with energy gap of the order of $$10 \mathrm{~eV}$$ are insulators
2
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

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]

A
2 $$\times$$ 10$$^{-10}$$ A and 49
B
3.2 $$\times$$ 10$$^{-9}$$ A and 99
C
1.6 $$\times$$ 10$$^{-19}$$ A and 90
D
1.7 $$\times$$ 10$$^{-11}$$ A and 70
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-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 118 English

A
AND gate
B
NOR gate
C
OR gate
D
X-OR gate
4
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-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 116 English

A
2 $$\times$$ 10$$^{-3}$$ A
B
2 $$\times$$ 10$$^{-2}$$ A
C
4 $$\times$$ 10$$^{-3}$$ A
D
10$$^{-3}$$ A
Questions Asked from MCQ (Single Correct Answer)
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