JELET Syllabus 2027 - Check Subject & Topics Wise Syllabus Here

Matrices up to order 3

Determinant up to order 3

Definition and expansion of determinants of order 2 and 3. Minor and cofactors. Elementary properties of Determinants (statements only) and simple problems. Solutions of linear simultaneous equations (up to 3 unknowns) by Cramer’s Rule. Rank of a matrix up to order 3. Linear homogeneous and non-homogeneous system of equations – statements of the relevant results and its applications.

Complex Number

Definition of complex numbers, Cartesian and polar. Exponential form of complex numbers. Modulus, amplitude and conjugate of a complex number. Algebra of complex numbers (Equality, Addition, Subtraction, Multiplication). Cube roots of unity and their properties. De Moivre’s theorem (statements only) and simple problems.

Vector Algebra

Definition of a vector quantity. Concept of Position vector and Ratio formula. Rectangular resolution of a vector. Algebra of vectors – equality, addition, subtraction, and scalar multiplication. Scalar (Dot) product of two vectors with properties. The vector (cross) product of two vectors with properties. Applications: Application of the dot product in work done by a force and projection of one vector upon another, application of the cross product in finding vector area and moment of a force. Scalar and vector triple product and their geometrical interpretations. Linear combination of 3 vectors. Linear dependence and independence of vectors.

Differential Calculus

Concept of function of one variable – Domain and range. Types of different functions, including periodic functions. Limit and continuity. Standard limits. Types of discontinuity. Derivatives of a function (1st order and 2nd order). Statements and Applications of Roll’s Theorem, Mean Value Theorem. Indeterminant Form. L’Hospital’s rule.

Application of Derivative

Geometric meaning of derivative. Rate measurement. Maxima and Minima (one variable)

Partial Differentiation

Definition and meaning of partial derivative. Evaluation of partial derivatives. Definition and examples of homogeneous functions. Euler’s theorem (1st order) on homogeneous functions for 2 variables (without proof). Problems.

Integral Calculus:

Definition of Integration as inverse process of differentiation. Rules for integration (sum, difference, scalar multiple). Integration of standard functions. Integration by substitution. Integration by parts. Integration by partial fraction. Definition of definite integral and simple problems. Properties of definite integral with simple problems. Application of definite integral – area of bounded region.

Ordinary Differential Equation

Definition of ordinary differential equation, order and degree. Solution of a differential equation of the first order and first degree. Separation of variables. Homogeneous type. Exact type. Linear type. Solution of a differential equation of the first order but not of the first degree. Solution of a linear second-order differential equation with constant coefficients. Complementary Functions (C.F). Particular integral for polynomial function eax, sinax and cosax, [F(-a 2) ≠0] eaxV where V is a function. Simple problem.

Definition of random experiment, sample space, event, occurrence of events and types of events (e.g., Impossible, mutually exclusive, Exhaustive, equally likely). Classical definition of probability, simple problems. Statements of total probability, compound probability and Base’s Theorem and simple problems.

Units, dimensions, and measurement:

CGS, MKS, SI units. Dimensions of common physical quantities, dimensional analysis. Common errors in measurement. Error, accuracy, precision, resolution, significant figure.

Kinematics

Speed, velocity, acceleration, uniform/non-uniform, rectilinear/ circular motion. Position/ velocity-time graph. Resolution and composition of vectors, scalar multiplication of vectors.

Laws of Motion

Newton’s laws of motion. Force, momentum, inertia, moment of inertia, impulse, couples, moment. Conditions of equilibrium. Conservation of momentum. Centripetal and centrifugal forces. Angular displacement/ velocity/ acceleration/ momentum, torque. Static and dynamic friction, angle of repose, banking of roads.

Work, power, energy

Definition, measures, and units. Law of conservation of energy. Kinetic and potential energy.

Gravitation

The universal law of gravitation. Acceleration due to gravity and its variation on/ above/ below Earth’s surface. Gravitational potential energy. Vertical linear/ vertical circular/ projectile motion.

Elasticity

Deforming force and restoring force, elastic, and plastic body. Stress-strain relationship, Hook’s law, Young’s modulus, Bulk modulus, Rigidity modulus, Poisson’s ratio and relation between them. Elastic energy

Surface tension

Cohesive and adhesive forces. Definition, dimension and SI unit of surface tension. Surface energy. Angle of contact. Formation of droplets, bubble; their adhesion. Capillarity, shape of liquid meniscus in a capillary tube, rise of liquid in a capillary tube. Effect of impurity and temperature on surface tension

Fluid mechanics/ Hydrostatics

Pascal’s law. Hydraulic lift. Buoyancy. Conditions of equilibrium of floating body. Archimedes’ principle. Streamline flow and turbulent flow of a fluid, critical velocity. Equation of continuity and Bernoulli’s theorem. Viscosity, Newton’s formula for viscous force, co-efficient of viscosity. Stokes law and terminal velocity. Effect of temperature on viscosity.

Thermal expansion of solid

Linear, areal and volume expansion. Coefficients of expansions and their relation. Change of density with temperature

Transmission of heat

Conduction, convection, radiation. Thermal conductivity (formula, definition, dimensions, and SI unit).

Thermodynamics

Thermal equilibrium, calorimetry. Zeroth law of thermodynamics. Heat, work, temperature and internal energy. First law of thermodynamics. Specific heats of gas, their relation and their ratio. Isothermal, isobaric, isochoric and adiabatic process

Reflection of Light

Reflection of light in plane mirror. Formation of image

Refraction of light

Refraction of light through plane surface. Laws of refraction. Refractive index, its relationship with the velocity of light in different media. Total internal reflection and critical angle. Principle of optical fibre.

Lens

Convex and concave lenses. Formation of image. Relation between u, v, f. Power of a lens (in different mediums). Equivalent focal length & power of two thin lenses in contact.

Photo electricity

Photoemission, Work function. Photoelectric current, its variation with intensity and frequency of incident radiation. Stopping potential, Threshold frequency. Concept of photon. Einstein’s photoelectric equation. Principle of solar photo-voltaic cell and its uses.

Atomic Structure

Bohr model of atom, de Broglie wave equation, Quantum numbers, Orbits and Orbitals, Aufbau principle, Pauli’s Exclusion principle, Hund’s rule of maximum multiplicity, electronic configuration of elements. Definition of Atomic number, Mass number, isotopes, isotones and isobars. Concept of hybridisation sp3, sp2, sp and shape of molecules

Chemical Bonding

Electrovalent, Covalent, and coordinate bonds, H-bond in HF, water, and ice. Classification of solids – crystalline and amorphous. Relationship between structure and properties of crystalline solids, namely ionic solids, covalent solids, and molecular solids. Covalent bonds in Carbon, Silicon and Germanium.

Acids, Bases & Salts

Avogadro number, Mole concept, weight and volume relations. Acids, Bases and Salts (Arrhenius and Lewis concepts). Acidity, basicity, neutralisation reaction, and hydrolysis of Salts. Equivalent Weight of acids, bases, & salts; strength of solution- normality, molarity, molality, formality and percentage strength, standard solution- primary and secondary standards, concept of pH, and pH scale. Indicators and choice of indicator, principles of acidimetry and alkalimetry. Buffer solution. Solubility product principle. Common ion effect with relation to group analysis.

Oxidation, Reduction, Electrochemistry

Oxidation and Reduction by electronic concept, balancing chemical equations by ion-electron method, Redox Titration, Electrolysis, Arrhenius theory, Faraday’s Laws, electrolysis of CuSO4 solution using Pt-electrode and Cu-electrode. Application of electrolysis, such as Electroplating, Electro-refining and Electrotyping, Electrochemical Cells, Primary Cell- Dry Cell, Secondary Cell- Lead storage cell, Electrochemical series.

Chemical Equilibrium

Reversible and irreversible reactions, exothermic and endothermic reactions, chemical equilibrium, Le Chatelier’s principle. Industrial preparation of Ammonia by Haber’s Process, Nitric acid by Ostwald’s process and Sulphuric acid by Contact Process. Catalyst and catalysis.

Metallurgy

Minerals, Ores, Gangue, Flux, Slag, General method of extraction of metals with reference to Iron, copper and Aluminium. Definition of Alloy, purposes of making Alloy, Composition and uses of alloys such as brass, bronze, German silver, duralumin, nichrome, bell metal, gun metal, Monel metal, alnico, Dutch metal, babbitt metal, stainless steel. Amalgams, properties and uses of cast iron, wrought iron, steel and sponge iron. Uses of different alloy steels.

Water

Soft and Hard water, action of soap on water, types of Hardness, causes of hardness, units of hardness, disadvantages of using hard water, estimation of total hardness by EDTA method, removal of hardness by Permutit process, Ion-exchange process, phosphate conditioning and Calgon treatment.

Organic Chemistry

Organic compounds, Classification, Homologous series, Functional groups, Isomerism, Nomenclature. Properties and preparation of Methane, Ethylene and Acetylene, Methylated spirit, Rectified spirit, Power alcohol, Proof spirit. Uses of Benzene, Naphthalene and phenol.

Electrical components, measuring instruments

Resistors, capacitors, inductors. Principle of operation of PMMC & MI type Instrument. Principles of Voltage and Current Measurement. Wheatstone bridge.

Transformers

Basic principles and construction. BH characteristics. Transformation ratio. Equivalent circuit, losses, regulation, efficiency. Auto transformer.

Electrical machines

Types of motors and their applications. Generation of rotating magnetic fields. Basic construction and working of a DC motor, a single-phase induction motor. Torque-Speed characteristics. Speed control.

DC sources and circuits

Voltage and current sources, their transformation, Thevenin’s, Norton’s theorems. Kirchhoff current and voltage laws. Superposition, equivalence. Determination of branch current/ voltage in passive circuits. Time domain characteristics of reactive components.

AC sources and circuits

Amplitude, frequency, time-period, phase, peak/average/ RMS values. Exponential, complex and phasor form of representation of sinusoidal voltage and current. Impedance, power factor, active/reactive power. Voltage and current relationship in star-delta connections. Behaviour of simple RLC circuits with AC excitation.

Basic semiconductor devices

Energy level diagrams of insulator, conductor & semi-conductor. Intrinsic & extrinsic, P-type, N-type semiconductors. P-N junction diode. PNP and NPN transistors, MOSFET, CMOS.

Analog Circuits

OPAMP, virtual ground, inverting and non-inverting amplifiers, adder, subtractor, integrator, differentiator.

Digital Electronics

Boolean Algebra, basic gates (AND, OR, NOT, NAND, NOR, ExOR, Ex-NOR) – truth tables, symbols, and combinations of gates.