1
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In semiconductors at room temperature,

A
the valence band is completely filled.
B
the conduction band is completely empty.
C
the conduction band is partially filled and the valence band is partially empty.
D
the valence band is completely filled and conduction band is partially empty.
2
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The logic circuit in figure is equivalent to

MHT CET 2024 2nd May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 56 English

A
OR gate
B
AND gate
C
NOR gate
D
NAND gate
3
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In an NPN transistor $10^{10}$ electrons enter the emitter in $10^{-6} \mathrm{~s}$ and $2 \%$ electrons recombine with holes in base. The current ratios ' $\alpha$ ' and ' $\beta$ ' of a transistor are respectively (nearly)

A
$0.98,49$
B
$49,0.98$
C
$0.49,98$
D
$98,0.49$
4
MHT CET 2023 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The output of following combination is same as that of

MHT CET 2023 14th May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 90 English

A
AND gate
B
OR gate
C
NAND gate
D
NOR gate
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