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)
Simple Harmonic Motion
MCQ (Single Correct Answer)
Heat and Thermodynamics
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
KCET 2020
MCQ (Single Correct Answer)
+1
-0

In the following circuit what are P and Q

KCET 2020 Physics - Semiconductor Devices and Logic Gates Question 19 English

A
$$P=1, Q=0$$
B
$$P=0, Q=1$$
C
$$P=0, Q=0$$
D
$$P=1, Q=1$$
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

A positive hole in a semiconductor is

A
an anti-particle of electron
B
a vacancy created when an electron leaves a covalent bond
C
absence of free electrons
D
an artificially created particle
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The conductivity of semiconductor increases with increase in temperature because

A
number density of charge carriers increases
B
relaxation time increases
C
both number density of charge carriers and relaxation time increases
D
number density of current carriers increases, relaxation time decreases but effect of decrease in relaxation time is much less than increase in number density
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

For a transistor amplifier, the voltage gain

A
remains constant for all frequencies
B
is high at high and low frequencies and constant in the middle frequency range
C
is low at high and low frequencies and constant at mid frequencies
D
constant at high frequencies and low at low frequencies
KCET Subjects