1
MHT CET 2026 18th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
The output Y of the given logic circuit is
MHT CET 2026 18th April Evening Shift Physics - Semiconductor Devices and Logic Gates Question 34 English
A
$\overline{(A \cdot B)} + \overline{(C \cdot B)}$
B
$\overline{(A + B)} \cdot \overline{(B \cdot C)}$
C
$\overline{(A \cdot B)} + \overline{(B + C)}$
D
$(A + B) + (B + C)$
2
MHT CET 2026 18th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
For intrinsic semiconductor, if $n_h$ and $n_e$ represent the number of holes per unit volume and the number of free electrons per unit volume respectively then
A
$n_h < n_e$
B
$n_h > n_e$
C
$n_h = n_e$
D
$n_h \neq n_e$
3
MHT CET 2026 18th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which one of the following statements is 'WRONG' regarding LED?
A
LED's have long lifetime if properly manufactured.
B
Colours produced by LED's do not fade out.
C
LED's are energy efficient.
D
Brightness of light emitted by LED cannot be controlled.
4
MHT CET 2026 18th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following logic gates will have an output of '1' (one) for the given inputs?
MHT CET 2026 18th April Morning Shift Physics - Semiconductor Devices and Logic Gates Question 31 English
A
D
B
B
C
A
D
C

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