**ECET-2020 SYLLABUS: PHYSICS (Common for Diploma)**

**Unit-I: Units and dimensions: **Physical quantity-fundamental and derived physical quantities- units-fundamental and derived units-SI units-multiples and sub-multiples in SI units-advantages of SI units-dimensions and dimensional formulae for physical quantities -dimensionless quantities-principle of homogeneity in dimensions- applications and limitations of dimensional analysis.

**Unit-II: Modern physics: **Photo electric effect–explanation and its laws-applications of photo electric effect (photocell)-Einstein’s photoelectric equation–critical angle and total internal reflection– optical fibers – principle, working, types and applications-concept of super conductivity , examples for super conducting materials – and applications.

**Unit-III: Heat and Thermodynamics: **Boyle‘s law-Absolute scale of temperature-Charles laws-Ideal gas equation-Universal gas constant and its value-SI Units-problems – isothermal process-adiabatic process-first law and second law of thermodynamics – two specific heats of a gas-relation between Cp and Cv-problems.

**Unit-IV: Elements of vectors: **Scalar and vector quantities-examples-types of vectors-addition and subtraction of vectors-triangle law-parallelogram law- expression for magnitude direction in case of parallelogram law -polygon law-resolution of a vector-unit vectors(i,j,k)-dot product and cross product of two vectors- characteristics of dot and cross products-examples- problems.

**Unit-V: Kinematics: **Equations of motion-acceleration due to gravity-equations of motion under gravity- projectile motion-examples-horizontal and oblique projections- expression for path of projectile in case of oblique projection – expressions for maximum height, time of ascent, time of flight, horizontal range in case of oblique projections – problems.

**Unit-VI: Friction: **Friction- causes and types of friction-normal reaction-laws of friction- coefficients of friction-angle of friction-methods to reduce friction-advantages and disadvantages of friction-expression for acceleration of a body over a rough horizontal surface – expressions for displacement and time taken to come to rest over a rough horizontal surface – problems.

**Unit-VII: Work, Power and Energy: **Work, power and energy-definitions and units-potential and kinetic energies-examples and expressions-work-energy theorem – relation between kinetic energy and momentum – law of conservation of energy in case of freely falling body -problems.

**Unit-VIII: Simple harmonic motion: **Definition-conditions of SHM – examples of SHM – expressions for displacement, velocity, acceleration, time period, frequency and phase of SHM- expression for time period of a simple pendulum- laws of simple pendulum -seconds pendulum- problems.

**Unit-IX: Sound: **Sound- longitudinal wave and transverse wave – musical sound and noise-noise pollution-Effects and methods to control Noise Pollution-Beats and echo’s and their applications-Doppler effect– Explanation, and Applications –Reverberation time -Sabine’s formula- characteristics of a good auditorium – problems.

**Unit-X: Properties of matter: **Define terms – elasticity, plasticity – stress and strain – units – Hooke’s law – definition of surface tension, examples – explanation on the basis of molecular theory – angle of contact , capillarity and examples – formula for surface tension based on capillarity –viscosity and examples- Newton’s formula for viscosity- Poiseulle’s equation for co- efficient for viscosity- effect of temperature on viscosity of liquids and gases- problems.

**Unit-XI: Electricity and Magnetism: **Ohm’s law –Specific resistance, Conductance and their units- state and explain kirchoff’s laws- expression for balancing condition of Wheat stone’s bridge- concept of meter bridge-coulomb’s inverse square law in magnetism- magnetic field – magnetic lines of force- magnetic induction field strength and units – moment of couple acting on a bar magnet placed in uniform magnetic field – problems.