1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct circuit diagrams for the normal operation from the following.

MHT CET 2023 11th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 22 English

A
(A), (B)
B
(B), (C)
C
(A), (C)
D
(B), (D)
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In energy band diagram of insulators, a band gap and the conduction band is respectively

A
very low and partially filled.
B
very high and completely filled.
C
very high and empty.
D
very low and empty.
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the case of NAND gate, if A and B are the inputs and $$\mathrm{Y}$$ is the output then

A
$$\mathrm{Y}=\mathrm{A} \cdot \mathrm{B}$$
B
$$\mathrm{Y}=\overline{\mathrm{A}-\mathrm{B}}$$
C
$$\mathrm{Y}=\overline{\mathrm{A}+\mathrm{B}}$$
D
$$\mathrm{Y}=\overline{\mathrm{A} \cdot \mathrm{B}}$$
4
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A pure $$\mathrm{Si}$$ crystal has $$4 \times 10^{28}$$ atoms per $$\mathrm{m}^3$$. It is doped by 1 ppm concentration of antimony. The number of free electrons available will be

A
$$4 \times 10^{34} \mathrm{~m}^{-3}$$
B
$$4 \times 10^{28} \mathrm{~m}^{-3}$$
C
$$4 \times 10^{22} \mathrm{~m}^{-3}$$
D
$$4 \times 10^{20} \mathrm{~m}^{-3}$$
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