Mechanics
Units & Measurement and Dimensions
MCQ (Single Correct Answer)
Motion in a Straight Line
MCQ (Single Correct Answer)
Work, Energy and Power
MCQ (Single Correct Answer)
Center of Mass and Collision
MCQ (Single Correct Answer)
Heat and Thermodynamics
MCQ (Single Correct Answer)
Simple Harmonic Motion
MCQ (Single Correct Answer)
Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
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
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If the energy gap of a substance is 5.4 eV , then the substance is
A
insulator
B
conductor
C
p-type semiconductor
D
$n$-type semiconductor
2
AP EAPCET 2024 - 20th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A p-n junction diode is used as
A
an amplifier
B
a rectifier
C
an oscillator
D
a modulator
3
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
When a signal is applied to the input of a transistor, it was found that output signal is phase-shifted by $180^{\circ}$. The transistor configuration is
A
CB - configuration
B
CE - configuration
C
CC - configuration
D
Both CB and CC - configuration
4
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $n_r$ and $n_h$ are concentrations of electron and holes in a semiconductor, then the intrinsic carrier concentration $n_j$ in thermal equilibrium is

AP EAPCET 2024 - 18th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 15 English

A
$n=\sqrt{\frac{n_3}{n_n}}$
B
$n=\frac{n_n}{n_n}$
C
$n=\sqrt{7 b n_n}$
D
$n_1=n_0+n_n$
AP EAPCET Subjects