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1
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
2
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
3
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
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

In the following circuit, what are P and Q?

KCET 2019 Physics - Semiconductor Devices and Logic Gates Question 16 English

A
$$P = 0, Q=0$$
B
$$P=1, Q=0$$
C
$$P=0, Q=1$$
D
$$P=1, Q=1$$
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KCET Subjects
Physics
Mechanics
Units & Measurement and Dimensions Vector Algebra Motion in a Straight Line Motion in a Plane Laws of Motion Circular Motion Work, Energy and Power Center of Mass and Collision Rotational Motion Gravitation Simple Harmonic Motion Fluid Mechanics Elasticity Waves Heat and Thermodynamics
Optics
Ray Optics Wave Optics
Electromagnetism
Electrostatics Current Electricity Capacitor Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current Electromagnetic Waves
Modern Physics
Atoms and Nuclei Dual Nature of Radiation Semiconductor Devices and Logic Gates Communication Systems
Chemistry
Physical Chemistry
Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry
Inorganic Chemistry
Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Salt Analysis Environmental Chemistry
Organic Chemistry
IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry
Mathematics
Algebra
Logarithms Quadratic Equations Sequences and Series Permutations and Combinations Probability Sets and Relations Binomial Theorem Vector Algebra Three Dimensional Geometry Matrices and Determinants Statistics Mathematical Reasoning Linear Programming Complex Numbers
Trigonometry
Trigonometric Ratios & Identities Trigonometric Equations Inverse Trigonometric Functions Properties of Triangles
Calculus
Functions Limits, Continuity and Differentiability Differentiation Application of Derivatives Indefinite Integration Definite Integration Area Under The Curves Differential Equations
Coordinate Geometry
Straight Lines and Pair of Straight Lines Circle Parabola Ellipse Hyperbola
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